{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-93849 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-93849 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-93849 is a medium-severity vulnerability in Mattermost, published on 26 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-93849 and fix it if it is affected.\n\nWhat it is: CVE-2026-93849 is a medium-severity vulnerability in Mattermost, published on 26 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-93849 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-2026-93849/ (Markdown: https://insights.sbomify.com/CVE-2026-93849/index.md)","id":"CVE-2026-93849","markdown":"https://insights.sbomify.com/CVE-2026-93849/index.md","name":"CVE-2026-93849","record":{"aliases":["GHSA-w44p-jxhf-26w5"],"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-789","name":"Memory Allocation with Excessive Size Value"}],"description":"Mattermost versions 11.9.x \u003c= 11.9.1, 11.8.x \u003c= 11.8.5, 11.7.x \u003c= 11.7.10, 11.10.x \u003c= 11.10.1 Mattermost fail to apply allocation limits to the byte-string decode paths in its WebSocket msgpack decoder, which allows an authenticated remote attacker to cause excessive server memory allocation via a crafted binary WebSocket frame declaring a Bin32 payload length of up to 4,294,967,295 bytes.. Mattermost Advisory ID: MMSA-2026-00768","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":"Mattermost versions 11.9.x \u003c= 11.9.1, 11.8.x \u003c= 11.8.5, 11.7.x \u003c= 11.7.10, 11.10.x \u003c= 11.10.1 Mattermost fail to apply allocation limits to","id":"CVE-2026-93849","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Unbounded memory consumption during PDF text extraction","id":"CVE-2026-93850"},"packages":[],"prev":{"headline":"Mattermost versions 11.7.x \u003c= 11.7.10 fail to apply outbound internal-connection filtering to the OpenID discovery endpoint request which al","id":"CVE-2026-93848"},"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-2026-93849/"}