{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-125246 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-125246 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-125246 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-125246 and fix it if it is affected.\n\nWhat it is: CVE-2026-125246 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-125246 in the wild and no public exploit code.\n\nAffected product: FFmpeg. 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-2026-125246/ (Markdown: https://insights.sbomify.com/CVE-2026-125246/index.md)","id":"CVE-2026-125246","markdown":"https://insights.sbomify.com/CVE-2026-125246/index.md","name":"CVE-2026-125246","record":{"aliases":["GHSA-x2v9-wwj2-f83c","UBUNTU-CVE-2026-125246"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"FFmpeg through 9.0.2 contains a denial of service vulnerability in cbs_jpeg_assemble_fragment() that miscounts 0xff stuffing bytes in JPEG scan headers. Attackers can supply a crafted JPEG/MJPEG stream with 0xff in the scan header, triggering an av_assert0 abort when CBS-based bitstream filters process it.","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":"FFmpeg through 9.0.2 Assertion Failure DoS via cbs_jpeg_assemble_fragment","id":"CVE-2026-125246","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"FFmpeg through 9.0.2 Integer Overflow via dng_decode_tiles() in libavcodec/tiff.c","id":"CVE-2026-125247"},"nickname":null,"packages":[],"prev":{"headline":"FFmpeg through 9.0.2 Memory Leak in MJPEG Hwaccel SOF Decoding","id":"CVE-2026-125245"},"products":["FFmpeg"],"published":"2026-11-09","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":"2026-11-09","vendors":["FFmpeg"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-125246/"}