{"answers":{"affected":"2 open source packages ship an affected version, including stigmem-node.","exploited":"There is no known exploitation of CVE-2026-76243 in the wild and no public exploit code.","fix":"Upgrade stigmem-node to 0.9.0a2 or later.","what":"CVE-2026-76243 is a critical authentication bypass vulnerability in eidetic-labs stigmem, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76243 and fix it if it is affected.\n\nWhat it is: CVE-2026-76243 is a critical authentication bypass vulnerability in eidetic-labs stigmem, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-76243 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- stigmem-node (PyPI): affected all versions; fixed in 0.9.0a2\n- stigmem-node (PyPI): affected all versions; fixed in 0.9.0a2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-76243/ (Markdown: https://insights.sbomify.com/CVE-2026-76243/index.md)","id":"CVE-2026-76243","markdown":"https://insights.sbomify.com/CVE-2026-76243/index.md","name":"CVE-2026-76243","record":{"aliases":["GHSA-fp6w-8wpg-74g5","GHSA-rqm4-4g3h-95wm"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"stigmem server","requires_auth":"none","summary":"Attackers can perform read, write, and federation operations with anonymous identity when authentication is disabled on non-loopback deployments.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"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","version":"4.0"},"cwes":[{"id":"CWE-285","name":"Improper Authorization"}],"description":"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 local development environments.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"stigmem before 0.9.0a2 Authentication Bypass via Disabled Auth","id":"CVE-2026-76243","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"stigmem-node Insecure Federation Transport Configuration","id":"CVE-2026-76244"},"packages":[{"ecosystem":"PyPI","fixed":["0.9.0a2"],"introduced":["0"],"last_affected":[],"package":"stigmem-node","purl":null,"source":"GHSA-fp6w-8wpg-74g5"},{"ecosystem":"PyPI","fixed":["0.9.0a2"],"introduced":["0"],"last_affected":[],"package":"stigmem-node","purl":"pkg:pypi/stigmem-node","source":"GHSA-fp6w-8wpg-74g5"}],"prev":{"headline":"stigmem Federation Peer Registration Authentication Bypass","id":"CVE-2026-76242"},"products":["stigmem"],"published":"2026-08-19","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-25","vendors":["eidetic-labs"]},"summary":"Attackers can perform read, write, and federation operations with anonymous identity when authentication is disabled on non-loopback deployments.","url":"https://insights.sbomify.com/CVE-2026-76243/"}