{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-28799 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-28799 is a high-severity use after free vulnerability in pjsip pjproject, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-28799 and fix it if it is affected.\n\nWhat it is: CVE-2026-28799 is a high-severity use after free vulnerability in pjsip pjproject, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-28799 in the wild and no public exploit code.\n\nAffected product: pjsip pjproject. 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-2026-28799/ (Markdown: https://insights.sbomify.com/CVE-2026-28799/index.md)","id":"CVE-2026-28799","markdown":"https://insights.sbomify.com/CVE-2026-28799/index.md","name":"CVE-2026-28799","record":{"aliases":["ALPINE-CVE-2026-28799","DEBIAN-CVE-2026-28799","GHSA-8fj4-fv9f-hjpc","UBUNTU-CVE-2026-28799"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"PJSIP multimedia library","requires_auth":"none","summary":"A heap use-after-free in PJSIP's presence subscription handler allows attackers to potentially execute code or cause denial of service via crafted unsubscription requests.","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":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.","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: Heap use-after-free in PJSIP presence subscription termination handler","id":"CVE-2026-28799","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":"Natro Macro: Malicious actions allowed through Discord RC Commands by any user","id":"CVE-2026-28800"},"packages":[],"prev":{"headline":"Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS","id":"CVE-2026-28798"},"products":["pjproject"],"published":"2026-03-06","related":[{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-09","vendors":["pjsip"]},"summary":"A heap use-after-free in PJSIP's presence subscription handler allows attackers to potentially execute code or cause denial of service via crafted unsubscription requests.","url":"https://insights.sbomify.com/CVE-2026-28799/"}