{"id":"CVE-2026-52754","summary":"Ghidra \u003c 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule","details":"Ghidra before 12.1 contains an authentication bypass vulnerability in PKIAuthenticationModule.authenticate() that allows any user with a valid CA-signed certificate to impersonate other users by presenting their public certificate with a null signature. Attackers can escalate privileges, modify repository access controls, exfiltrate shared reverse engineering databases, and permanently compromise server integrity.","aliases":["GHSA-5wxq-7qpv-65p2"],"modified":"2026-07-16T03:30:55.755304013Z","published":"2026-06-10T12:40:46.463Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-347"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52754.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52754.json"},{"type":"ADVISORY","url":"https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-5wxq-7qpv-65p2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52754"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ghidra-authentication-bypass-via-null-signature-in-pkiauthenticationmodule"},{"type":"FIX","url":"https://github.com/NationalSecurityAgency/ghidra/commit/78729379e471bbb3d969409be6a8c3d24af84220"},{"type":"FIX","url":"https://github.com/NationalSecurityAgency/ghidra/commit/79d8f164f8bb8b15cfb60c5d4faeb8e1c25d15ca"},{"type":"PACKAGE","url":"https://github.com/nationalsecurityagency/ghidra"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nationalsecurityagency/ghidra","events":[{"introduced":"0"},{"fixed":"7e89d94e3478f0b1931c34882a0f606fdb06961f"},{"fixed":"78729379e471bbb3d969409be6a8c3d24af84220"},{"fixed":"79d8f164f8bb8b15cfb60c5d4faeb8e1c25d15ca"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:nsa:ghidra:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"12.1"}]}}],"versions":["Ghidra_12.0_build","Ghidra_10.3_build","Ghidra_9.0.1_build"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52754.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}