{"cve":{"cve_id":"CVE-2026-49454","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00135,"epss_percentile":0.03254,"epss_as_of":"2026-06-23","description":"Relyra is a strict-by-default SAML 2.0 Service Provider library for Elixir and Phoenix. Versions 1.0.0 and 1.1.0 accept forged SAML signatures because SignatureValue was not cryptographically verified before the library returned a successful authentication result. The XMLDSig trust boundary was incomplete as :public_key.verify over the exclusive-C14N canonicalized SignedInfo was not performed against the configured IdP certificate's public key, DigestValue was not recomputed over the canonicalized referenced element, and canonicalize/2 remained an unused passthrough in the signature-verification path. The result was a structure-only acceptance path where document shape and trust-source rejection could succeed without proving the signature bytes. A forged SignatureValue carrying an attacker-controlled NameID could be accepted as {:ok}. This issue has been fixed in version 1.2.0.","published_at":"2026-06-18T20:52:22.605000Z","last_modified_at":null,"cvss_v3_score":9.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-287","CWE-347"],"nvd_references":["https://github.com/szTheory/relyra/security/advisories/GHSA-jv46-xfwm-36j7","https://github.com/szTheory/relyra/commit/2e456897af3158c175bb490ce7fc51d6241c8922","https://github.com/szTheory/relyra/commit/8910200"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:45.962068Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"sztheory","vendor_name":"szTheory","product_slug":"relyra","product_name":"relyra","version_start":">= 1.0.0, < 1.2.0","version_start_inclusive":true,"version_end":">= 1.0.0, < 1.2.0","version_end_inclusive":true,"cpe23_uri":"cve5:sztheory:relyra:>= 1.0.0, < 1.2.0:>= 1.0.0, < 1.2.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/szTheory/relyra/security/advisories/GHSA-jv46-xfwm-36j7","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/szTheory/relyra/commit/2e456897af3158c175bb490ce7fc51d6241c8922","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/szTheory/relyra/commit/8910200","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-18T20:52:22.605000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:10.688071Z","label":"CVSS score revised","source":"cvelistv5"}]}