{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-57163 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-57163 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-57163 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 4 Sep 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-2026-57163 and fix it if it is affected.\n\nWhat it is: CVE-2026-57163 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 4 Sep 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-2026-57163 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-2026-57163/ (Markdown: https://insights.sbomify.com/CVE-2026-57163/index.md)","id":"CVE-2026-57163","markdown":"https://insights.sbomify.com/CVE-2026-57163/index.md","name":"CVE-2026-57163","record":{"aliases":["DEBIAN-CVE-2026-57163","GHSA-jm2j-6rg6-qvwx","UBUNTU-CVE-2026-57163"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"PJSIP multimedia library","requires_auth":"none","summary":"A stack buffer overflow in PJSIP's GnuTLS backend allows remote attackers to cause memory corruption or crashes via crafted TLS certificates.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pjsip","vendor":"teluu"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"PJSIP is a free and open source multimedia communication library written in C. Prior to commit c4a151a, a stack buffer overflow exists in the GnuTLS TLS backend when parsing the Subject Alternative Name extension of a peer certificate (tls_cert_get_info() in ssl_sock_gtls.c). Only GnuTLS builds are affected (--with-gnutls); OpenSSL and Apple SecureTransport/Network.framework builds are not affected. While extracting certificate information after a TLS handshake, an incorrect buffer-size value can cause an oversized SubjectAltName entry to be written past the end of a fixed-size stack buffer. A network-positioned attacker presenting a crafted certificate — a malicious server to a connecting client, or a malicious client to a server that requests certificates — can trigger this during the TLS handshake, before any SIP-level authentication. Impact may range from unexpected application termination to control flow hijack/memory corruption. This issue has been patched via commit c4a151a.","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":"PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend","id":"CVE-2026-57163","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"PJSIP: Heap overflow in the HTTP client","id":"CVE-2026-57164"},"packages":[],"prev":{"headline":"PJSIP: Stack overflow parsing SDP a=crypto attributes","id":"CVE-2026-57162"},"products":["pjproject"],"published":"2026-09-04","related":[{"cvss_score":9.8,"headline":"PJSIP has use-after-free vulnerability in SRTP media transport","id":"CVE-2023-38703","kev_date_added":null,"published":"2023-10-06"},{"cvss_score":9.1,"headline":"Media transport downgrade from the secure version (SRTP) to non-secure (RTP) in pjsip","id":"CVE-2022-39269","kev_date_added":null,"published":"2022-10-06"},{"cvss_score":8.8,"headline":"PJSIP: Stack overflow handling Service-Route headers in a registration response","id":"CVE-2026-57161","kev_date_added":null,"published":"2026-09-04"},{"cvss_score":8.8,"headline":"PJSIP: Stack overflow parsing SDP a=crypto attributes","id":"CVE-2026-57162","kev_date_added":null,"published":"2026-09-04"},{"cvss_score":8.4,"headline":"PJSIP: SDP parser out-of-bounds write in remote payload-type map maintenance","id":"CVE-2026-57159","kev_date_added":null,"published":"2026-09-04"},{"cvss_score":8.3,"headline":"PJSIP: Heap overflow in the HTTP client","id":"CVE-2026-57164","kev_date_added":null,"published":"2026-09-04"}],"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":"2026-09-04","vendors":["pjsip"]},"summary":"A stack buffer overflow in PJSIP's GnuTLS backend allows remote attackers to cause memory corruption or crashes via crafted TLS certificates.","url":"https://insights.sbomify.com/CVE-2026-57163/"}