{"id":"CVE-2026-76242","state":"PUBLISHED","title":"stigmem Federation Peer Registration Authentication Bypass","description":"stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted.","publishedAt":"2026-08-19T14:02:19.435Z","updatedAt":"2026-08-20T15:38:01.701Z","severity":{"score":9.1,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["eidetic-labs stigmem"],"affected":[{"vendor":"eidetic-labs","product":"stigmem","packageURL":"pkg:pypi/stigmem-node","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.9.0a2","versionType":"custom"},{"version":"0.9.0a2","status":"unaffected","versionType":"custom"}]}],"references":["https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9vp8-3hmv-8fgh","https://www.vulncheck.com/advisories/stigmem-federation-peer-registration-authentication-bypass"],"weaknesses":["CWE-295"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/76xxx/CVE-2026-76242.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-76242","state":"PUBLISHED","datePublished":"2026-08-19T14:02:19.435Z","dateUpdated":"2026-08-20T15:38:01.701Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-19T11:38:33.225Z"},"containers":{"cna":{"title":"stigmem Federation Peer Registration Authentication Bypass","descriptions":[{"lang":"en","value":"stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted."}],"affected":[{"vendor":"eidetic-labs","product":"stigmem","packageURL":"pkg:pypi/stigmem-node","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.9.0a2","versionType":"custom"},{"version":"0.9.0a2","status":"unaffected","versionType":"custom"}]}],"references":[{"url":"https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9vp8-3hmv-8fgh","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-9vp8-3hmv-8fgh)"},{"url":"https://www.vulncheck.com/advisories/stigmem-federation-peer-registration-authentication-bypass","name":"VulnCheck Advisory: stigmem Federation Peer Registration Authentication Bypass","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","lang":"en","description":"Improper Certificate Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-08-19T14:02:19.435Z"},"datePublic":"2026-05-19T00:00:00.000Z","x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-20T15:37:49.018621Z","id":"CVE-2026-76242","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-20T15:38:01.701Z"}}]}}}