{"answers":{"affected":"7 open source packages ship an affected version, including github.com/pion/stun/v3, github.com/pion/stun and github.com/pion/stun/v2.","exploited":"There is no known exploitation of CVE-2026-54909 in the wild and no public exploit code.","fix":"Upgrade github.com/pion/stun/v3 to 3.1.5 or later.","what":"CVE-2026-54909 is a medium-severity denial of service vulnerability in pion stun, published on 31 Jul 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-2026-54909 and fix it if it is affected.\n\nWhat it is: CVE-2026-54909 is a medium-severity denial of service vulnerability in pion stun, published on 31 Jul 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-2026-54909 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/pion/stun/v3 (Go): affected all versions; fixed in 3.1.5\n- github.com/pion/stun/v3 (Go): affected all versions; fixed in 3.1.5\n- github.com/pion/stun/v3 (Go): affected all versions; fixed in 3.1.5\n- github.com/pion/stun (Go): affected all versions up to 1.23.1; no fix listed\n- github.com/pion/stun (Go): affected all versions up to 1.23.1; no fix listed\n- github.com/pion/stun/v2 (Go): affected all versions up to 2.0.0; no fix listed\n- github.com/pion/stun/v2 (Go): affected all versions up to 2.0.0; no fix listed\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-2026-54909/ (Markdown: https://insights.sbomify.com/CVE-2026-54909/index.md)","id":"CVE-2026-54909","markdown":"https://insights.sbomify.com/CVE-2026-54909/index.md","name":"CVE-2026-54909","record":{"aliases":["DEBIAN-CVE-2026-54909","ECHO-228a-ef1d-f517","GHSA-34rh-wp3j-6cxc","GO-2026-6163","MINI-5x8j-r36r-mf8w","MINI-8v73-p45p-gr93","MINI-9mcv-wx67-3wmj","MINI-9pj5-45hq-h952","MINI-9r38-hm8c-hfh6","MINI-c392-rrhf-vw32","MINI-gwh6-xf82-46w6","MINI-h534-97vr-4jj7","MINI-hc34-84c9-fjvx","MINI-p632-qqgp-grgm","MINI-q278-qwff-34cr","MINI-q44x-vj47-cjj8","MINI-qp6j-2qgj-w4vv","MINI-r673-ccp5-m2rq","MINI-rrgc-629q-7chx","MINI-v3p7-4grw-cfg2","MINI-vg5m-x237-jrwj","MINI-w5h4-5f48-9cp5","MINI-w9hj-7v2m-8w5v","MINI-wwh8-89m2-j28j","MINI-xg6p-q5vp-4374","MINI-xjvg-wp92-f68x","UBUNTU-CVE-2026-54909"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go STUN library","requires_auth":"none","summary":"A remote attacker can cause a denial of service by sending a malformed STUN packet that triggers a panic in the Pion STUN library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"pion/stun is a Go implementation of STUN. Prior to 3.1.3, XORMappedAddress.GetFromAs can panic while parsing a malformed short XOR-MAPPED-ADDRESS attribute in STUN or ICE Binding-response parsing paths, allowing remote denial of service. This issue is fixed in version 3.1.3.","ecosystems":["Go"],"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":"Pion STUN vulnerable to remote denial of service via panic while parsing a malformed XOR-MAPPED-ADDRESS attribute","id":"CVE-2026-54909","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":7,"n_references":4,"next":{"headline":"FileBrowser Quantum's path traversal issue in subtitle handler allows any authenticated user to read arbitrary files","id":"CVE-2026-54910"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.23.1"],"package":"github.com/pion/stun","purl":null,"source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.23.1"],"package":"github.com/pion/stun","purl":"pkg:golang/github.com/pion/stun","source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["2.0.0"],"package":"github.com/pion/stun/v2","purl":null,"source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["2.0.0"],"package":"github.com/pion/stun/v2","purl":"pkg:golang/github.com/pion/stun/v2","source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":["3.1.5"],"introduced":["0"],"last_affected":[],"package":"github.com/pion/stun/v3","purl":null,"source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":["3.1.5"],"introduced":["0"],"last_affected":[],"package":"github.com/pion/stun/v3","purl":"pkg:golang/github.com/pion/stun/v3","source":"GHSA-34rh-wp3j-6cxc"},{"ecosystem":"Go","fixed":["3.1.5"],"introduced":["0"],"last_affected":[],"package":"github.com/pion/stun/v3","purl":"pkg:golang/github.com/pion/stun/v3","source":"GO-2026-6163"}],"prev":{"headline":"Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message","id":"CVE-2026-54908"},"products":["stun"],"published":"2026-07-31","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-08-03","vendors":["pion"]},"summary":"A remote attacker can cause a denial of service by sending a malformed STUN packet that triggers a panic in the Pion STUN library.","url":"https://insights.sbomify.com/CVE-2026-54909/"}