{"items":[{"id":"NVI-00002022","kind":"vulnerability","title":"Zend-Session session validation vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-96c6-m98x-hxjx"],"plain_summary":"OSV carries this publisher advisory for zendframework/zend-session, zendframework/zend-session. 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 2.2.9 for zendframework/zend-session. Confirm the publisher’s latest guidance.","source_ids":["sr-08473c6e1d331af6ec8d91d0dd234920"],"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 2.3.4 for zendframework/zend-session. Confirm the publisher’s latest guidance.","source_ids":["sr-08473c6e1d331af6ec8d91d0dd234920"],"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-08473c6e1d331af6ec8d91d0dd234920","url":"https://github.com/advisories/GHSA-96c6-m98x-hxjx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-96c6-m98x-hxjx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.680Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-08473c6e1d331af6ec8d91d0dd234920"],"technology":"zendframework/zend-session","known_exclusions":[],"conditions_summary":"`Zend\\Session` session validators do not work as expected if set prior to the start of a session.\n\nFor instance, the following test case fails (where $this->manager is an instance of `Zend\\Session\\SessionManager`):\n```\n$this\n    ->manager\n    ->getValidatorChain()\n    ->attach('session.validate', array(new RemoteAddr(), 'isValid'));\n\n$this->manager->start();\n\n$this->assertSame(\n    array(\n        'Zend\\Session\\Validator\\RemoteAddr' =3D> '',\n    ),\n    $_SESSION['__ZF']['_VALID']\n);\n```\nThe implication is that subsequent calls to `Zend\\Session\\SessionManager#start()` (in later requests, assuming a session was created) will not have any validator metadata attached, which causes any validator metadata to be re-built from scratch, thus marking the session as valid.\n\nAn attacker is thus able to simply ignore session validators such as `RemoteAddr` or `HttpUserAgent`, since the \"signature\" that these validators check against is not being stored in the session.","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.2.9"]},{"certainty":"source_listed","source_ids":["sr-08473c6e1d331af6ec8d91d0dd234920"],"technology":"zendframework/zend-session","known_exclusions":[],"conditions_summary":"`Zend\\Session` session validators do not work as expected if set prior to the start of a session.\n\nFor instance, the following test case fails (where $this->manager is an instance of `Zend\\Session\\SessionManager`):\n```\n$this\n    ->manager\n    ->getValidatorChain()\n    ->attach('session.validate', array(new RemoteAddr(), 'isValid'));\n\n$this->manager->start();\n\n$this->assertSame(\n    array(\n        'Zend\\Session\\Validator\\RemoteAddr' =3D> '',\n    ),\n    $_SESSION['__ZF']['_VALID']\n);\n```\nThe implication is that subsequent calls to `Zend\\Session\\SessionManager#start()` (in later requests, assuming a session was created) will not have any validator metadata attached, which causes any validator metadata to be re-built from scratch, thus marking the session as valid.\n\nAn attacker is thus able to simply ignore session validators such as `RemoteAddr` or `HttpUserAgent`, since the \"signature\" that these validators check against is not being stored in the session.","public_affected_ranges":["ECOSYSTEM: introduced 2.3.0; fixed 2.3.4"]}],"null_published_at":"2026-10-31T21:53:28.062Z","source_updated_at":"2024-12-04T05:40:26.255Z","source_disclosed_at":"2024-06-07T21:25:23.000Z","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":"2026-10-31T21:42:10.680Z"}],"next_cursor":null,"snapshot_revision":"42594"}