{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-116516 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-116516 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-116516 is a medium-severity vulnerability in Mattermost, published on 26 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-116516 and fix it if it is affected.\n\nWhat it is: CVE-2026-116516 is a medium-severity vulnerability in Mattermost, published on 26 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-116516 in the wild and no public exploit code.\n\nAffected product: Mattermost. 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-2026-116516/ (Markdown: https://insights.sbomify.com/CVE-2026-116516/index.md)","id":"CVE-2026-116516","markdown":"https://insights.sbomify.com/CVE-2026-116516/index.md","name":"CVE-2026-116516","record":{"aliases":["GHSA-p4vm-rgr6-x9pc"],"analysis":null,"analysis_generated_by":null,"assigner":"Mattermost","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"}],"description":"Mattermost versions \u003c=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which allows an authenticated attacker to crash the Agents plugin via summarizing a Zoom chat transcription containing short continuation lines. Mattermost Advisory ID: MMSA-2026-00723","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Insufficient length validation when parsing Zoom chat transcriptions","id":"CVE-2026-116516","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"HTTP::Body versions before 1.23_01 for Perl lose track of chunk boundaries in chunked request bodies when a read ends inside a chunk.","id":"CVE-2026-116531"},"packages":[],"prev":{"headline":"itsourcecode Online Book Store book.php sql injection","id":"CVE-2026-116515"},"products":["Mattermost"],"published":"2026-10-26","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-26","vendors":["Mattermost"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-116516/"}