{"items":[{"id":"NVI-00005141","kind":"vulnerability","title":"October CMS: PHP Object Injection via Backend Widget Session Storage","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-2ff2-mx52-q8wp","CVE-2026-49400"],"plain_summary":"OSV carries this publisher advisory for october/system, october/system. 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 3.7.17 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"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 4.2.23 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"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-03ec6003fa76eae17ddc79e733c3bd1d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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This report has not examined your application.","related_sources":[{"id":"sr-83c861498d4859ca468fbfb6e32e0500","url":"https://github.com/advisories/GHSA-2ff2-mx52-q8wp","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-2ff2-mx52-q8wp","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:40.015Z"},{"id":"sr-2eb96868e499c3c25e46e1351ebc1f97","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49400","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-49400","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:22.913Z"},{"id":"sr-03ec6003fa76eae17ddc79e733c3bd1d","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-2026-49400","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.856Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. Any code path that could write to a `widget.*` session key with attacker-controlled bytes could trigger PHP object injection the next time the widget read its session state, allowing instantiation of arbitrary classes and reachable PHP gadget chains.\n\n**This issue only affects installations running with `cms.safe_mode` enabled.** Safe Mode is a niche opt-in feature, primarily used for demo installations and multi-tenant or shared-editor scenarios where untrusted users are deliberately granted access to the CMS markup editor. In standard production deployments Safe Mode is off, backend access is restricted to trusted administrators, and a markup editor can already execute arbitrary PHP directly. The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.7.17"]},{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. Any code path that could write to a `widget.*` session key with attacker-controlled bytes could trigger PHP object injection the next time the widget read its session state, allowing instantiation of arbitrary classes and reachable PHP gadget chains.\n\n**This issue only affects installations running with `cms.safe_mode` enabled.** Safe Mode is a niche opt-in feature, primarily used for demo installations and multi-tenant or shared-editor scenarios where untrusted users are deliberately granted access to the CMS markup editor. In standard production deployments Safe Mode is off, backend access is restricted to trusted administrators, and a markup editor can already execute arbitrary PHP directly. The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0; fixed 4.2.23"]}],"null_published_at":"2026-11-03T17:49:14.997Z","source_updated_at":"2026-09-14T18:15:05.119Z","source_disclosed_at":"2026-09-14T17:08:06.000Z","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":"2026-10-31T21:41:40.015Z"},{"id":"NVI-00005141","kind":"vulnerability","title":"October CMS: PHP Object Injection via Backend Widget Session Storage","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-2ff2-mx52-q8wp","CVE-2026-49400"],"plain_summary":"OSV carries this publisher advisory for october/system, october/system. 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 3.7.17 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"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 4.2.23 for october/system. Confirm the publisher’s latest guidance.","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"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-2eb96868e499c3c25e46e1351ebc1f97"],"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":"2026-09-30T17:51:56.193Z","value":"3.3 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-2eb96868e499c3c25e46e1351ebc1f97"}],"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-83c861498d4859ca468fbfb6e32e0500","url":"https://github.com/advisories/GHSA-2ff2-mx52-q8wp","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-2ff2-mx52-q8wp","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:40.015Z"},{"id":"sr-2eb96868e499c3c25e46e1351ebc1f97","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49400","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-49400","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:22.913Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. Any code path that could write to a `widget.*` session key with attacker-controlled bytes could trigger PHP object injection the next time the widget read its session state, allowing instantiation of arbitrary classes and reachable PHP gadget chains.\n\n**This issue only affects installations running with `cms.safe_mode` enabled.** Safe Mode is a niche opt-in feature, primarily used for demo installations and multi-tenant or shared-editor scenarios where untrusted users are deliberately granted access to the CMS markup editor. In standard production deployments Safe Mode is off, backend access is restricted to trusted administrators, and a markup editor can already execute arbitrary PHP directly. The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.7.17"]},{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. Any code path that could write to a `widget.*` session key with attacker-controlled bytes could trigger PHP object injection the next time the widget read its session state, allowing instantiation of arbitrary classes and reachable PHP gadget chains.\n\n**This issue only affects installations running with `cms.safe_mode` enabled.** Safe Mode is a niche opt-in feature, primarily used for demo installations and multi-tenant or shared-editor scenarios where untrusted users are deliberately granted access to the CMS markup editor. In standard production deployments Safe Mode is off, backend access is restricted to trusted administrators, and a markup editor can already execute arbitrary PHP directly. The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0; fixed 4.2.23"]}],"null_published_at":"2026-11-01T14:34:07.612Z","source_updated_at":"2026-09-14T18:15:05.119Z","source_disclosed_at":"2026-09-14T17:08:06.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:40.015Z"},{"id":"NVI-00005141","kind":"vulnerability","title":"October CMS: PHP Object Injection via Backend Widget Session Storage","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-2ff2-mx52-q8wp","CVE-2026-49400"],"plain_summary":"OSV carries this publisher advisory for october/system, october/system. 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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-83c861498d4859ca468fbfb6e32e0500","url":"https://github.com/advisories/GHSA-2ff2-mx52-q8wp","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-2ff2-mx52-q8wp","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:40.015Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. 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The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.7.17"]},{"certainty":"source_listed","source_ids":["sr-83c861498d4859ca468fbfb6e32e0500"],"technology":"october/system","known_exclusions":[],"conditions_summary":"The backend `SessionMaker` trait stored widget session state as `base64(serialize(...))` and consumed it with `unserialize()` without an `allowed_classes` restriction. Any code path that could write to a `widget.*` session key with attacker-controlled bytes could trigger PHP object injection the next time the widget read its session state, allowing instantiation of arbitrary classes and reachable PHP gadget chains.\n\n**This issue only affects installations running with `cms.safe_mode` enabled.** Safe Mode is a niche opt-in feature, primarily used for demo installations and multi-tenant or shared-editor scenarios where untrusted users are deliberately granted access to the CMS markup editor. In standard production deployments Safe Mode is off, backend access is restricted to trusted administrators, and a markup editor can already execute arbitrary PHP directly. The session-write path that reaches this sink is gated by the Safe Mode sandbox, so installations without Safe Mode enabled are not exposed.\n\n**Scope of impact is narrow even with Safe Mode enabled.** The standard backend code paths that populate widget session state (search terms, sort options, selected IDs, filter values) wr","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0; fixed 4.2.23"]}],"null_published_at":"2026-10-31T22:13:01.450Z","source_updated_at":"2026-09-14T18:15:05.119Z","source_disclosed_at":"2026-09-14T17:08:06.000Z","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":"2026-10-31T21:41:40.015Z"}],"next_cursor":null,"snapshot_revision":"42594"}