{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26203 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-26203 is a medium-severity use after free vulnerability in pjsip pjmedia-video, published on 19 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-26203 and fix it if it is affected.\n\nWhat it is: CVE-2026-26203 is a medium-severity use after free vulnerability in pjsip pjmedia-video, published on 19 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-26203 in the wild and no public exploit code.\n\nAffected product: pjsip pjmedia-video. 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-2026-26203/ (Markdown: https://insights.sbomify.com/CVE-2026-26203/index.md)","id":"CVE-2026-26203","markdown":"https://insights.sbomify.com/CVE-2026-26203/index.md","name":"CVE-2026-26203","record":{"aliases":["ALPINE-CVE-2026-26203","DEBIAN-CVE-2026-26203","GHSA-p965-mf7j-gwv8","UBUNTU-CVE-2026-26203"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PJSIP multimedia library","requires_auth":"none","summary":"Attackers can trigger a heap buffer underflow in PJSIP's H.264 packetizer via malformed bitstreams, potentially leading to code execution or crashes.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pjsip","vendor":"pjsip"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"PJSIP is a free and open source multimedia communication library. Versions prior to 2.17 have a critical heap buffer underflow vulnerability in PJSIP's H.264 packetizer. The bug occurs when processing malformed H.264 bitstreams without NAL unit start codes, where the packetizer performs unchecked pointer arithmetic that can read from memory located before the allocated buffer. Version 2.17 contains a patch for the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"PJSIP's pjmedia-video has use-after-free in H264 packetizer when packetizing fragmented NAL","id":"CVE-2026-26203","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData","id":"CVE-2026-26204"},"packages":[],"prev":{"headline":"Penpot has Arbitrary File Read via create-font-variant RPC endpoint","id":"CVE-2026-26202"},"products":["pjmedia-video"],"published":"2026-02-19","related":[{"cvss_score":8.7,"headline":"PJSIP: Heap use-after-free in PJSIP presence subscription termination handler","id":"CVE-2026-28799","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":8.7,"headline":"PJSIP: Stack buffer overflow in Opus codec parser","id":"CVE-2026-29068","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":8.5,"headline":"PJSIP: Heap buffer overflow in Opus codec decoding","id":"CVE-2026-40614","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":8.4,"headline":"PJSIP is vulnerable to Heap-based Buffer Overflow through DNS parser","id":"CVE-2026-32945","kev_date_added":null,"published":"2026-03-20"},{"cvss_score":8.1,"headline":"PJSIP: Stack buffer overflow in pjsip_auth_create_digest2()","id":"CVE-2026-40892","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":8.1,"headline":"PJSIP has a Heap-based Buffer Overflow vulnerability in its H.264 unpacketizer","id":"CVE-2026-26967","kev_date_added":null,"published":"2026-02-20"},{"cvss_score":8.1,"headline":"PJSIP has a heap buffer overflow in ICE with long username","id":"CVE-2026-25994","kev_date_added":null,"published":"2026-02-11"}],"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":"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":"2026-02-19","vendors":["pjsip"]},"summary":"Attackers can trigger a heap buffer underflow in PJSIP's H.264 packetizer via malformed bitstreams, potentially leading to code execution or crashes.","url":"https://insights.sbomify.com/CVE-2026-26203/"}