{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-121727 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-121727 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-121727 is a high-severity vulnerability in jorisvink kore, published on 3 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-121727 and fix it if it is affected.\n\nWhat it is: CVE-2026-121727 is a high-severity vulnerability in jorisvink kore, published on 3 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-121727 in the wild and no public exploit code.\n\nAffected product: jorisvink kore. 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-2026-121727/ (Markdown: https://insights.sbomify.com/CVE-2026-121727/index.md)","id":"CVE-2026-121727","markdown":"https://insights.sbomify.com/CVE-2026-121727/index.md","name":"CVE-2026-121727","record":{"aliases":["DEBIAN-CVE-2026-121727","GHSA-f33j-xw62-gm9f","UBUNTU-CVE-2026-121727"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurrent POST, PUT or DELETE connections, wrapping content_length to grow buffers unbounded and exhaust worker memory.","ecosystems":[],"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":"Kore before 4.3.0 Integer Underflow Memory Exhaustion via http_header_recv()","id":"CVE-2026-121727","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass via /register/step2","id":"CVE-2026-121728"},"nickname":null,"packages":[],"prev":{"headline":"WordPress Contextual Related Posts plugin \u003c= 4.5.3 - Broken Access Control vulnerability","id":"CVE-2026-121724"},"products":["kore"],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["jorisvink"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-121727/"}