{"id":"GHSA-fp6w-8wpg-74g5","summary":"stigmem-node: Auth-disabled deployments may grant broad anonymous access outside loopback","details":"### Impact\nStigmem nodes configured with authentication disabled could grant the anonymous identity broad read/write/federation capabilities if exposed outside a loopback-only local development environment. Impacted users are operators who intentionally disabled authentication while binding the node to a non-loopback URL.\n\n### Patches\nPatched in 0.9.0a2. The node now refuses unauthenticated operation outside loopback-only local development.\n\n### Workarounds\nBefore upgrading, keep authentication enabled for all non-local deployments and do not expose nodes with authentication disabled to untrusted networks.\n\n### Upgrade\nUpgrade to the patched release:\n\n```bash\npip install --upgrade --pre stigmem-node\n```\n\nIf developers install through the Stigmem meta-package instead, they should use the matching extra for their deployments, for example:\n\n```bash\npip install --upgrade --pre 'stigmem[node]'\n```\n\n### Resources\n- Release: https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2\n- Changelog: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35\n- Security policy and posture: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md","aliases":["CVE-2026-76243"],"modified":"2026-08-20T04:04:15.333636609Z","published":"2026-05-29T22:13:47Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-285","CWE-862"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-05-29T22:13:47Z"},"references":[{"type":"WEB","url":"https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-fp6w-8wpg-74g5"},{"type":"PACKAGE","url":"https://github.com/eidetic-labs/stigmem"},{"type":"WEB","url":"https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35"},{"type":"WEB","url":"https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md"},{"type":"WEB","url":"https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2"}],"affected":[{"package":{"name":"stigmem-node","ecosystem":"PyPI","purl":"pkg:pypi/stigmem-node"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.0a2"}]}],"versions":["0.9.0a1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-fp6w-8wpg-74g5/GHSA-fp6w-8wpg-74g5.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}