{"items":[{"id":"NVI-00007812","kind":"vulnerability","title":"SimpleSAMLphp Reflected Cross-site Scripting vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vpr3-cw3h-prw8"],"plain_summary":"OSV carries this publisher advisory for simplesamlphp/simplesamlphp. 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 1.17.3 for simplesamlphp/simplesamlphp. Confirm the publisher’s latest guidance.","source_ids":["sr-e971aa29b112de0b03d20cae91390954"],"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-e971aa29b112de0b03d20cae91390954","url":"https://github.com/advisories/GHSA-vpr3-cw3h-prw8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-vpr3-cw3h-prw8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.376Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e971aa29b112de0b03d20cae91390954"],"technology":"simplesamlphp/simplesamlphp","known_exclusions":[],"conditions_summary":"### Background\nSimpleSAMLphp uses metadata to determine how to interact with other SAML entities. This metadata includes what’s called endpoints, which are URLs belonging to that entity where SAML messages can be sent. These URLs are used directly by SimpleSAMLphp when a message is sent, either via an HTTP redirection or by automatically posting a form to them.\n\n### Description\nWhen sending a SAML message to another entity, SimpleSAMLphp will use the URL of the appropriate endpoint to redirect the user’s browser to it, or craft a form that will be automatically posted to it, depending on the SAML binding used. The URL that’s target of the message is fetched from the stored metadata for the given entity, and that metadata is trusted as correct.\n\nHowever, if that metadata has been altered by a malicious party (either an attacker or a rogue administrator) to substitute the URLs of the endpoints with javascript code, SimpleSAMLphp was blindly using them without any validation, trusting the contents of the metadata. This would lead to a reflected XSS where the javascript code is sent inline to the web browser, and if SimpleSAMLphp is not using a strict Content Security Policy to forbid ","public_affected_ranges":["ECOSYSTEM: introduced 1.12.0; fixed 1.17.3"]}],"null_published_at":"2026-10-31T22:13:18.636Z","source_updated_at":"2024-12-03T06:08:33.102Z","source_disclosed_at":"2024-05-28T20:55:51.000Z","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":"2026-10-31T21:42:41.376Z"}],"next_cursor":null,"snapshot_revision":"42594"}