{"items":[{"id":"NVI-00007876","kind":"vulnerability","title":"RCE in Symfony","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-754h-5r27-7x3r","CVE-2020-15094"],"plain_summary":"OSV carries this publisher advisory for symfony/http-kernel, symfony/http-kernel, symfony/symfony, symfony/symfony. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-27e1d4a96decf8c806ada6e7f2803482"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"7.5 HIGH (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"},{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"8 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"},{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"8.8 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"3.043%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.8753. Missing scores are unknown.","source_id":"sr-27e1d4a96decf8c806ada6e7f2803482"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-ec0fa4dd0cc809cd9f23c83364cf61d7","url":"https://github.com/advisories/GHSA-754h-5r27-7x3r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-754h-5r27-7x3r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.944Z"},{"id":"sr-7f99d0c5611a96f030c9d93105659a60","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15094","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-15094","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T19:10:09.643Z"},{"id":"sr-27e1d4a96decf8c806ada6e7f2803482","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2020-15094","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:14:50.774Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. 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But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]}],"null_published_at":"2026-11-08T19:53:38.893Z","source_updated_at":"2026-07-08T06:29:30.177Z","source_disclosed_at":"2020-09-02T17:29:56.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:59.944Z"},{"id":"NVI-00007876","kind":"vulnerability","title":"RCE in Symfony","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-754h-5r27-7x3r","CVE-2020-15094"],"plain_summary":"OSV carries this publisher advisory for symfony/http-kernel, symfony/http-kernel, symfony/symfony, symfony/symfony. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-7f99d0c5611a96f030c9d93105659a60"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"7.5 HIGH (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"},{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"8 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"},{"kind":"CVSS","as_of":"2026-06-17T02:56:02.457Z","value":"8.8 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7f99d0c5611a96f030c9d93105659a60"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-ec0fa4dd0cc809cd9f23c83364cf61d7","url":"https://github.com/advisories/GHSA-754h-5r27-7x3r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-754h-5r27-7x3r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.944Z"},{"id":"sr-7f99d0c5611a96f030c9d93105659a60","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15094","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-15094","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T19:10:09.643Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]}],"null_published_at":"2026-11-06T07:24:15.192Z","source_updated_at":"2026-07-08T06:29:30.177Z","source_disclosed_at":"2020-09-02T17:29:56.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.944Z"},{"id":"NVI-00007876","kind":"vulnerability","title":"RCE in Symfony","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-754h-5r27-7x3r","CVE-2020-15094"],"plain_summary":"OSV carries this publisher advisory for symfony/http-kernel, symfony/http-kernel, symfony/symfony, symfony/symfony. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/http-kernel. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.4.13 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.1.5 for symfony/symfony. Confirm the publisher’s latest guidance.","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-ec0fa4dd0cc809cd9f23c83364cf61d7","url":"https://github.com/advisories/GHSA-754h-5r27-7x3r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-754h-5r27-7x3r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.944Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/http-kernel","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 4.3.0; fixed 4.4.13"]},{"certainty":"source_listed","source_ids":["sr-ec0fa4dd0cc809cd9f23c83364cf61d7"],"technology":"symfony/symfony","known_exclusions":[],"conditions_summary":"Description\n-----------\n\nThe `CachingHttpClient` class from the HttpClient Symfony component relies on the `HttpCache` class to handle requests. `HttpCache` uses internal headers like `X-Body-Eval` and `X-Body-File` to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by `CachingHttpClient` and if an attacker can control the response for a request being made by the `CachingHttpClient`, remote code execution is possible.\n\nResolution\n----------\n\nHTTP headers designed for internal use in `HttpCache` are now stripped from remote responses before being passed to `HttpCache`.\n\nThe patch for this issue is available here for the 4.4 branch.\n\nCredits\n-------\n\nI would like to thank Matthias Pigulla (webfactory GmbH) for reporting and fixing the issue.","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0; fixed 5.1.5"]}],"null_published_at":"2026-10-31T22:13:18.638Z","source_updated_at":"2026-07-08T06:29:30.177Z","source_disclosed_at":"2020-09-02T17:29:56.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:41:59.944Z"}],"next_cursor":null,"snapshot_revision":"42594"}