{"items":[{"id":"NVI-00003641","kind":"vulnerability","title":"Zend-Captcha Information Disclosure and Insufficient Entropy vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mg4x-prh7-g4mx"],"plain_summary":"OSV carries this publisher advisory for zendframework/zend-captcha, zendframework/zend-captcha. 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 2.4.9 for zendframework/zend-captcha. Confirm the publisher’s latest guidance.","source_ids":["sr-45f4412d189d3b132df05fcc9a6ea386"],"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 2.5.2 for zendframework/zend-captcha. Confirm the publisher’s latest guidance.","source_ids":["sr-45f4412d189d3b132df05fcc9a6ea386"],"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-45f4412d189d3b132df05fcc9a6ea386","url":"https://github.com/advisories/GHSA-mg4x-prh7-g4mx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-mg4x-prh7-g4mx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.978Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-45f4412d189d3b132df05fcc9a6ea386"],"technology":"zendframework/zend-captcha","known_exclusions":[],"conditions_summary":"In Zend Framework, `Zend_Captcha_Word` (v1) and `Zend\\Captcha\\Word` (v2) generate a \"word\" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's internal `array_rand()` function. This function does not generate sufficient entropy due to its usage of rand() instead of more cryptographically secure methods such as `openssl_pseudo_random_bytes()`. This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.4.9"]},{"certainty":"source_listed","source_ids":["sr-45f4412d189d3b132df05fcc9a6ea386"],"technology":"zendframework/zend-captcha","known_exclusions":[],"conditions_summary":"In Zend Framework, `Zend_Captcha_Word` (v1) and `Zend\\Captcha\\Word` (v2) generate a \"word\" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's internal `array_rand()` function. This function does not generate sufficient entropy due to its usage of rand() instead of more cryptographically secure methods such as `openssl_pseudo_random_bytes()`. This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.","public_affected_ranges":["ECOSYSTEM: introduced 2.5.0; fixed 2.5.2"]}],"null_published_at":"2026-10-31T22:12:48.025Z","source_updated_at":"2024-12-04T05:36:22.994Z","source_disclosed_at":"2024-06-07T22:25:12.000Z","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":"2026-10-31T21:42:30.978Z"}],"next_cursor":null,"snapshot_revision":"42594"}