{"items":[{"id":"NVI-00008315","kind":"vulnerability","title":"guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts","revision":4,"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-cwxw-98qj-8qjx","CVE-2026-55767"],"plain_summary":"GitHub lists this reviewed advisory for guzzlehttp/guzzle. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-671a6b298ab28d141c24ae64082e789a"],"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},{"summary":"The original advisory lists fixed boundaries 7.12.1 for guzzlehttp/guzzle. Confirm the publisher’s latest guidance.","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"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":[{"kind":"CVSS","as_of":"2026-08-05T21:49:53.000Z","value":"5.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0e504994e9b786129a7d70c1c931a202"},{"kind":"CVSS","as_of":"2026-08-05T22:17:07.543Z","value":"5.8 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-3320771e7e7cc539381b49271baadedb"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.211%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.11424. Missing scores are unknown.","source_id":"sr-671a6b298ab28d141c24ae64082e789a"}],"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-0e504994e9b786129a7d70c1c931a202","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"},{"id":"sr-fe7f98c53ee832abbae91238400dfcbd","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-3320771e7e7cc539381b49271baadedb","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55767","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55767","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T22:35:57.723Z"},{"id":"sr-671a6b298ab28d141c24ae64082e789a","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-2026-55767","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0e504994e9b786129a7d70c1c931a202"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["< 7.12.1"]},{"certainty":"source_listed","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 7.12.1"]}],"null_published_at":"2026-11-04T10:04:35.929Z","source_updated_at":"2026-08-05T21:49:53.000Z","source_disclosed_at":"2026-06-19T14:37:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00008315","kind":"vulnerability","title":"guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cwxw-98qj-8qjx","CVE-2026-55767"],"plain_summary":"GitHub lists this reviewed advisory for guzzlehttp/guzzle. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-671a6b298ab28d141c24ae64082e789a"],"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},{"summary":"The original advisory lists fixed boundaries 7.12.1 for guzzlehttp/guzzle. Confirm the publisher’s latest guidance.","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"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":[{"kind":"CVSS","as_of":"2026-08-05T21:49:53.000Z","value":"5.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0e504994e9b786129a7d70c1c931a202"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.211%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.11424. Missing scores are unknown.","source_id":"sr-671a6b298ab28d141c24ae64082e789a"}],"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-0e504994e9b786129a7d70c1c931a202","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"},{"id":"sr-fe7f98c53ee832abbae91238400dfcbd","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-671a6b298ab28d141c24ae64082e789a","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-2026-55767","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0e504994e9b786129a7d70c1c931a202"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["< 7.12.1"]},{"certainty":"source_listed","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 7.12.1"]}],"null_published_at":"2026-11-03T10:03:26.538Z","source_updated_at":"2026-08-05T21:49:53.000Z","source_disclosed_at":"2026-06-19T14:37:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00008315","kind":"vulnerability","title":"guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cwxw-98qj-8qjx","CVE-2026-55767"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/guzzle. 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 7.12.1 for guzzlehttp/guzzle. Confirm the publisher’s latest guidance.","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"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-671a6b298ab28d141c24ae64082e789a"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.211%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.11424. Missing scores are unknown.","source_id":"sr-671a6b298ab28d141c24ae64082e789a"}],"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-fe7f98c53ee832abbae91238400dfcbd","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-671a6b298ab28d141c24ae64082e789a","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-2026-55767","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 7.12.1"]}],"null_published_at":"2026-11-01T01:45:40.742Z","source_updated_at":"2026-09-10T03:50:49.287Z","source_disclosed_at":"2026-06-19T14:37:29.000Z","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":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00008315","kind":"vulnerability","title":"guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cwxw-98qj-8qjx","CVE-2026-55767"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/guzzle. 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 7.12.1 for guzzlehttp/guzzle. Confirm the publisher’s latest guidance.","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"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-fe7f98c53ee832abbae91238400dfcbd","url":"https://github.com/advisories/GHSA-cwxw-98qj-8qjx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cwxw-98qj-8qjx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fe7f98c53ee832abbae91238400dfcbd"],"technology":"guzzlehttp/guzzle","known_exclusions":[],"conditions_summary":"### Impact\n\n`CookieJar` incorrectly accepts cookies with a dot-only `Domain` attribute, such as `Domain=.`, `Domain=..`, `Domain=...`, and whitespace-padded variants such as `Domain= . `. In affected versions, `SetCookie::matchesDomain()` removes leading dots from the cookie domain, normalizing dot-only values to the empty string; `SetCookie::validate()` only rejected a strictly empty domain, so these cookies could be stored and the empty normalized domain was treated as matching any request host.\n\nAn attacker-controlled origin that an application requests with a shared cookie jar can therefore set a cookie that Guzzle later sends to unrelated hosts using the same jar. This may allow cookie injection or session fixation against downstream services, depending on how those services interpret the injected cookie. Applications are affected when they use Guzzle's cookie support, for example `new Client(['cookies' => true])` or an explicit shared `CookieJar`, and reuse the same jar across attacker-controlled and trusted origins.\n\nApplications that do not use Guzzle's cookie support, or that use separate cookie jars per origin or trust boundary, are not affected. This issue is distinct fr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 7.12.1"]}],"null_published_at":"2026-10-31T22:13:22.839Z","source_updated_at":"2026-09-10T03:50:49.287Z","source_disclosed_at":"2026-06-19T14:37:29.000Z","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":"2026-10-31T21:42:10.706Z"}],"next_cursor":null,"snapshot_revision":"42594"}