{"id":"CVE-2026-76243","title":"stigmem versions before 0.9.0a2 allow unauthenticated access when authentication is disabled on non-loopback deployments","summary":"stigmem versions before 0.9.0a2 allow unauthenticated access when authentication is disabled on non-loopback deployments. Attackers can perform read, write, and federation operations with anonymous identity when nodes are exposed outside…","severity":"critical","cwe":["CWE-285"],"vendor":"stigmem-node","product":"stigmem-node","affected":["stigmem-node < 0.9.0a2"],"patched":["stigmem-node 0.9.0a2"],"published":"2026-08-19","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:43:32.537","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-76243","references":[{"url":"https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-fp6w-8wpg-74g5","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/stigmem-before-0a2-authentication-bypass-via-disabled-auth","label":"disclosure@vulncheck.com"},{"url":"https://github.com/eidetic-labs/stigmem"},{"url":"https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35"},{"url":"https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md"},{"url":"https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2"}],"tags":["nvd","osv","pip"],"epss":0.00564,"epssPercentile":0.46711,"aliases":["GHSA-fp6w-8wpg-74g5"],"ecosystem":"pip","ingestedAt":"2026-08-20T19:23:05.949Z","slug":"CVE-2026-76243","body":"## Overview\n\nstigmem versions before 0.9.0a2 allow unauthenticated access when authentication is disabled on non-loopback deployments. Attackers can perform read, write, and federation operations with anonymous identity when nodes are exposed outside local development environments.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-76243)\n\nAffected packages:\n\n- `stigmem-node < 0.9.0a2`\n\nPatched in:\n\n- `stigmem-node 0.9.0a2`\n\nSource: https://osv.dev/vulnerability/GHSA-fp6w-8wpg-74g5","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":52.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}