{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2026-96656 in the wild since at least 20 Oct 2026.","fix":"No fix has been published for CVE-2026-96656 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 23 Oct 2026.","what":"CVE-2026-96656 is a high-severity path traversal vulnerability in Plex Media Server, published on 23 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-96656 and fix it if it is affected.\n\nWhat it is: CVE-2026-96656 is a high-severity path traversal vulnerability in Plex Media Server, published on 23 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-96656 in the wild since at least 20 Oct 2026.\n\nAffected product: Plex Media Server. 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-2026-96656/ (Markdown: https://insights.sbomify.com/CVE-2026-96656/index.md)","id":"CVE-2026-96656","markdown":"https://insights.sbomify.com/CVE-2026-96656/index.md","name":"CVE-2026-96656","record":{"aliases":["GHSA-2g2v-9wf5-6m3g"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Plex Media Server","requires_auth":"high_privilege","summary":"An admin user can write arbitrary files that execute on load due to unsafe handling of transcoder options and missing signature checks.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisa-cg","cpe":[{"product":"media_server","vendor":"plex"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"}],"description":"Plex Media Server before 1.43.3.10861 allows an admin user to write arbitrary files that may be executed on load. The preference TranscoderH264Options is appended verbatim to x264's option string on every transcode. At startup, all .so files are run without signature, execute bit, or symbol checks.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-10-18","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-10-18T10:11:53Z","kind":"github_poc","ref":"https://github.com/a3igner/plex-codec-cache-implant","stars":0,"title":"Incident write-up: unsigned .so in the Plex Media Server codec cache executes a dropper on every transcode (CVE-2026-96656) — IOCs, STIX, YARA"}],"tier":"exploited"},"has_fix":null,"headline":"Plex Media Server External Control of File Name or Path","id":"CVE-2026-96656","indexable":true,"kev":{"dateAdded":"2026-10-20","dueDate":"2026-10-23","knownRansomwareCampaignUse":"Unknown","product":"Media Server","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","vendorProject":"Plex","vulnerabilityName":"Plex Media Server External Control of File Name or Path Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Foreman: foreman: arbitrary code execution via safemode sandbox bypass","id":"CVE-2026-96658"},"packages":[],"prev":{"headline":"Plex Media Server Server-Side Request Forgery (SSRF)","id":"CVE-2026-96655"},"products":["Media Server"],"published":"2026-09-23","related":[{"cvss_score":7.2,"headline":"Plex Media Server Remote Code Execution","id":"CVE-2020-5741","kev_date_added":"2023-03-10","published":"2020-05-08"},{"cvss_score":6.9,"headline":"Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page","id":"CVE-2026-96654","kev_date_added":"2026-10-20","published":"2026-09-23"},{"cvss_score":5.3,"headline":"Plex Media Server Server-Side Request Forgery (SSRF)","id":"CVE-2026-96652","kev_date_added":"2026-10-20","published":"2026-09-23"},{"cvss_score":5.3,"headline":"Plex Media Server Server-Side Request Forgery (SSRF)","id":"CVE-2026-96655","kev_date_added":"2026-10-20","published":"2026-09-23"},{"cvss_score":9.8,"headline":"XML external entity in n/a","id":"CVE-2018-13415","kev_date_added":null,"published":"2018-08-13"},{"cvss_score":8.8,"headline":"Cross-site request forgery in Plex Media Server","id":"CVE-2020-5742","kev_date_added":null,"published":"2020-06-15"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Plex"]},"summary":"An admin user can write arbitrary files that execute on load due to unsafe handling of transcoder options and missing signature checks.","url":"https://insights.sbomify.com/CVE-2026-96656/"}