Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule | Advisories

Advisories

Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule

severity: high
date: 6/10/2026
Affecting: Ghidra < 12.1
CVE: CVE-2026-52754
CWE: CWE-347 Improper Verification of Cryptographic Signature
CVSS: 8.7
CVSS V4 Vector: 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
References: GitHub Security Advisory (GHSA-5wxq-7qpv-65p2)
Patch Commit (1)
Patch Commit (2)
Credit: @jro-calif, Sean Nejad (@allsmog)
Description: 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.

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