CVE-2026-88341
A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule files. An attacker can provide a malicious file with an invalid arena configuration (num_buffers=0) that triggers an assertion failure in yr_arena_get_ptr(), causing the application to terminate.
- Published Sep 22, 2026
- CVSS 5.5 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available