{"items":[{"id":"NVI-00008286","kind":"vulnerability","title":"Incorrect signature verification in SimpleSAMLphp","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-p9cm-r7jg-8q3g","CVE-2016-9955"],"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 1.14.11 for simplesamlphp/simplesamlphp. Confirm the publisher’s latest guidance.","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"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-9892911dcb94971a7db6bfec1b8de6f4"],"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":"2026-06-17T00:56:49.870Z","value":"4 MEDIUM (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-80d5aecd390b53607f6e36b1b531b693"},{"kind":"CVSS","as_of":"2026-06-17T00:56:49.870Z","value":"6.3 MEDIUM (3.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-80d5aecd390b53607f6e36b1b531b693"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"1.182%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.67756. Missing scores are unknown.","source_id":"sr-9892911dcb94971a7db6bfec1b8de6f4"}],"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-fd655acdd02f8d5997407249421c4dea","url":"https://github.com/advisories/GHSA-p9cm-r7jg-8q3g","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-p9cm-r7jg-8q3g","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.988Z"},{"id":"sr-80d5aecd390b53607f6e36b1b531b693","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9955","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2016-9955","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T14:30:03.971Z"},{"id":"sr-9892911dcb94971a7db6bfec1b8de6f4","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-2016-9955","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"technology":"simplesamlphp/simplesamlphp","known_exclusions":[],"conditions_summary":"### Background\nAn incorrect check of return values in the signature validation utilities allows an attacker to get invalid signatures accepted as valid by forcing an error during validation.\n\n### Description\nThe `SimpleSAML_XML_Validator` class allows the verification of the XML digital signature of a SAML 1 message with a given key. In particular, the constructor of the class receives an XML node and a key to verify it and throws an exception in case there is an error, either caused by incorrect input or an invalid signature. This method uses the `verify()` method from the `RobRichards\\XMLSecDSig` class to verify the signature with the given key, which in turn will end up calling `openssl_verify()` depending on the signature algorithm used.\n\nThe `openssl_verify()` function returns `1` when the signature was successfully verified, `0` if it failed to verify with the given key and `-1` in case an error occurs. PHP allows translating numerical values to boolean implicitly, with the following correspondences:\n\n- `0` equals `false`\n- Non-zero equals `true`\n\nThis means that an implicit conversion to _boolean_ of the values returned by `openssl_verify()` will convert an error state, sign","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.14.11"]}],"null_published_at":"2026-11-06T07:24:15.192Z","source_updated_at":"2024-02-16T08:12:55.454Z","source_disclosed_at":"2020-01-24T21:27:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:30.988Z"},{"id":"NVI-00008286","kind":"vulnerability","title":"Incorrect signature verification in SimpleSAMLphp","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-p9cm-r7jg-8q3g","CVE-2016-9955"],"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 1.14.11 for simplesamlphp/simplesamlphp. Confirm the publisher’s latest guidance.","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"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-9892911dcb94971a7db6bfec1b8de6f4"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"1.182%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.67756. Missing scores are unknown.","source_id":"sr-9892911dcb94971a7db6bfec1b8de6f4"}],"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-fd655acdd02f8d5997407249421c4dea","url":"https://github.com/advisories/GHSA-p9cm-r7jg-8q3g","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-p9cm-r7jg-8q3g","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.988Z"},{"id":"sr-9892911dcb94971a7db6bfec1b8de6f4","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-2016-9955","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"technology":"simplesamlphp/simplesamlphp","known_exclusions":[],"conditions_summary":"### Background\nAn incorrect check of return values in the signature validation utilities allows an attacker to get invalid signatures accepted as valid by forcing an error during validation.\n\n### Description\nThe `SimpleSAML_XML_Validator` class allows the verification of the XML digital signature of a SAML 1 message with a given key. In particular, the constructor of the class receives an XML node and a key to verify it and throws an exception in case there is an error, either caused by incorrect input or an invalid signature. This method uses the `verify()` method from the `RobRichards\\XMLSecDSig` class to verify the signature with the given key, which in turn will end up calling `openssl_verify()` depending on the signature algorithm used.\n\nThe `openssl_verify()` function returns `1` when the signature was successfully verified, `0` if it failed to verify with the given key and `-1` in case an error occurs. PHP allows translating numerical values to boolean implicitly, with the following correspondences:\n\n- `0` equals `false`\n- Non-zero equals `true`\n\nThis means that an implicit conversion to _boolean_ of the values returned by `openssl_verify()` will convert an error state, sign","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.14.11"]}],"null_published_at":"2026-11-04T02:53:03.155Z","source_updated_at":"2024-02-16T08:12:55.454Z","source_disclosed_at":"2020-01-24T21:27:42.000Z","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":"2026-10-31T21:42:30.988Z"},{"id":"NVI-00008286","kind":"vulnerability","title":"Incorrect signature verification in SimpleSAMLphp","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-p9cm-r7jg-8q3g","CVE-2016-9955"],"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 1.14.11 for simplesamlphp/simplesamlphp. Confirm the publisher’s latest guidance.","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"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-fd655acdd02f8d5997407249421c4dea","url":"https://github.com/advisories/GHSA-p9cm-r7jg-8q3g","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-p9cm-r7jg-8q3g","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.988Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fd655acdd02f8d5997407249421c4dea"],"technology":"simplesamlphp/simplesamlphp","known_exclusions":[],"conditions_summary":"### Background\nAn incorrect check of return values in the signature validation utilities allows an attacker to get invalid signatures accepted as valid by forcing an error during validation.\n\n### Description\nThe `SimpleSAML_XML_Validator` class allows the verification of the XML digital signature of a SAML 1 message with a given key. In particular, the constructor of the class receives an XML node and a key to verify it and throws an exception in case there is an error, either caused by incorrect input or an invalid signature. This method uses the `verify()` method from the `RobRichards\\XMLSecDSig` class to verify the signature with the given key, which in turn will end up calling `openssl_verify()` depending on the signature algorithm used.\n\nThe `openssl_verify()` function returns `1` when the signature was successfully verified, `0` if it failed to verify with the given key and `-1` in case an error occurs. PHP allows translating numerical values to boolean implicitly, with the following correspondences:\n\n- `0` equals `false`\n- Non-zero equals `true`\n\nThis means that an implicit conversion to _boolean_ of the values returned by `openssl_verify()` will convert an error state, sign","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.14.11"]}],"null_published_at":"2026-10-31T22:13:22.838Z","source_updated_at":"2024-02-16T08:12:55.454Z","source_disclosed_at":"2020-01-24T21:27:42.000Z","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":"2026-10-31T21:42:30.988Z"}],"next_cursor":null,"snapshot_revision":"42594"}