{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121728 exists.","exposure":"","fix":"No fix has been published for CVE-2026-121728 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-121728 is a medium-severity vulnerability in SourceHut meta.sr.ht, published on 3 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-121728 and fix it if it is affected.\n\nWhat it is: CVE-2026-121728 is a medium-severity vulnerability in SourceHut meta.sr.ht, published on 3 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121728 exists.\n\nAffected product: SourceHut meta.sr.ht. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-121728/ (Markdown: https://insights.sbomify.com/CVE-2026-121728/index.md)","id":"CVE-2026-121728","markdown":"https://insights.sbomify.com/CVE-2026-121728/index.md","name":"CVE-2026-121728","record":{"aliases":["GHSA-j8p6-f6h2-jc6f"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass vulnerability that allows unauthenticated attackers to register accounts when public registration is disabled. Attackers can obtain a CSRF token from /login and POST credentials to /register/step2, which invokes the unchecked GraphQL RegisterAccount mutation to create accounts.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2","id":"CVE-2026-121728","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"emailflare before commit cf31f33 Missing Authorization via /api/keys Routes","id":"CVE-2026-121729"},"nickname":null,"packages":[],"prev":{"headline":"Kore before 4.3.0 Integer Underflow Memory Exhaustion via http_header_recv()","id":"CVE-2026-121727"},"products":["meta.sr.ht"],"published":"2026-11-03","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["SourceHut"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-121728/"}