{"items":[{"id":"NVI-00004806","kind":"vulnerability","title":"ZendFramework Potential Information Disclosure and Insufficient Entropy vulnerabilities","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-xg9w-r469-m455"],"plain_summary":"OSV carries this publisher advisory for zendframework/zendframework, zendframework/zendframework. 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 2.0.8 for zendframework/zendframework. Confirm the publisher’s latest guidance.","source_ids":["sr-73e9d2e88cf133918156d25cbbde157f"],"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 2.1.4 for zendframework/zendframework. Confirm the publisher’s latest guidance.","source_ids":["sr-73e9d2e88cf133918156d25cbbde157f"],"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-73e9d2e88cf133918156d25cbbde157f","url":"https://github.com/advisories/GHSA-xg9w-r469-m455","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-xg9w-r469-m455","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.444Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-73e9d2e88cf133918156d25cbbde157f"],"technology":"zendframework/zendframework","known_exclusions":[],"conditions_summary":"In Zend Framework 2, the `Zend\\Math\\Rand` component generates random bytes using the OpenSSL or Mcrypt extensions when available but will otherwise use PHP's `mt_rand()` function as a fallback. All outputs from `mt_rand()` are predictable for the same PHP process if an attacker can brute force the seed used by the Marsenne-Twister algorithm in a Seed Recovery Attack. This attack can be successfully applied with minimum effort if the attacker has access to either a random number from `mt_rand()` or a Session ID generated without using additional entropy. This makes `mt_rand()` unsuitable for generating non-trivial random bytes since it has Insufficient Entropy to protect against brute force attacks on the seed.\n\nThe `Zend\\Validate\\Csrf` component generates CSRF tokens by SHA1 hashing a salt, random number possibly generated using `mt_rand()` and a form name. Where the salt is known, an attacker can brute force the SHA1 hash with minimum effort to discover the random number when `mt_rand()` is utilised as a fallback to the OpenSSL and Mcrypt extensions. This constitutes an Information Disclosure where the recovered random number may itself be brute forced to recover the seed value an","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.0.8"]},{"certainty":"source_listed","source_ids":["sr-73e9d2e88cf133918156d25cbbde157f"],"technology":"zendframework/zendframework","known_exclusions":[],"conditions_summary":"In Zend Framework 2, the `Zend\\Math\\Rand` component generates random bytes using the OpenSSL or Mcrypt extensions when available but will otherwise use PHP's `mt_rand()` function as a fallback. All outputs from `mt_rand()` are predictable for the same PHP process if an attacker can brute force the seed used by the Marsenne-Twister algorithm in a Seed Recovery Attack. This attack can be successfully applied with minimum effort if the attacker has access to either a random number from `mt_rand()` or a Session ID generated without using additional entropy. This makes `mt_rand()` unsuitable for generating non-trivial random bytes since it has Insufficient Entropy to protect against brute force attacks on the seed.\n\nThe `Zend\\Validate\\Csrf` component generates CSRF tokens by SHA1 hashing a salt, random number possibly generated using `mt_rand()` and a form name. Where the salt is known, an attacker can brute force the SHA1 hash with minimum effort to discover the random number when `mt_rand()` is utilised as a fallback to the OpenSSL and Mcrypt extensions. This constitutes an Information Disclosure where the recovered random number may itself be brute forced to recover the seed value an","public_affected_ranges":["ECOSYSTEM: introduced 2.1.0; fixed 2.1.4"]}],"null_published_at":"2026-10-31T22:12:57.143Z","source_updated_at":"2024-12-04T05:40:43.088Z","source_disclosed_at":"2024-06-07T20:27:03.000Z","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":"2026-10-31T21:42:51.444Z"}],"next_cursor":null,"snapshot_revision":"42594"}