{"id":"CVE-2026-1496","aliases":["EUVD-2026-16595","GHSA-gc4h-xc67-2w55"],"status":"published","title":"Coverity CLI Authentication Bypass","description":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0055,"percentile":0.46289,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-03-27T14:14:01Z","modified":"2026-10-26T21:10:00Z","products":[{"vendor":"black duck","product":"coverity"}],"references":[{"url":"https://community.blackduck.com/s/article/Black-Duck-Security-Advisory-CVE-2026-1496","tags":["vendor-advisory"]},{"url":"https://community.blackduck.com/s/article/Instructions-on-how-to-block-token-endpoint-for-Coverity-Connect","tags":["vendor-advisory","mitigation"]},{"url":"https://community.blackduck.com/s/article/WAF-IDS-IPS-Mitigation-Guidance","tags":["vendor-advisory","mitigation"]},{"url":"https://github.com/blackduck-inc/Coverity-Usage-Log-Analyzer","tags":["related"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1496"},{"url":"https://github.com/advisories/GHSA-gc4h-xc67-2w55"}],"sources":{"cve":[{"id":"CVE-2026-1496","title":"Coverity CLI Authentication Bypass","description":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.","status":"published","published":"2026-03-27T14:14:01.871Z","modified":"2026-03-27T14:36:04.188Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:01.271368Z"}],"euvd":[{"id":"EUVD-2026-16595","description":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.","status":"published","published":"2026-03-27T14:14:01Z","modified":"2026-03-27T14:36:04Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T19:25:27.277964Z"}],"ghsa":[{"id":"GHSA-gc4h-xc67-2w55","title":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for...","description":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.","status":"published","published":"2026-03-27T15:30:26Z","modified":"2026-03-27T15:30:32Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:06:54.074781Z"}],"nvd":[{"id":"CVE-2026-1496","description":"Vulnerable versions of Coverity Connect lack an error handler in the authentication logic for command line tooling that makes it vulnerable to an authentication bypass. A malicious actor with access to the /token API endpoint that either knows or guesses a valid username, can use this in a specially crafted HTTP request to bypass authentication. Successful exploitation allows the malicious actor to assume all roles and privileges granted to the valid user’s Coverity Connect account.","status":"published","published":"2026-03-27T15:16:48.053Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:11.678711Z"}]}}