CVE-2026-58107

CVE-2026-58107 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. CodeChecker's massStoreRun processing path performs one-shot decompression of attacker-controlled, Base64-encoded zlib data without enforcing a maximum decompressed size. An authenticated user with permission to store analysis runs can submit a highly compressed payload that expands to a significantly larger byte sequence. Because the entire decompressed output is materialized in memory before being written to a temporary file, a sufficiently large payload may exhaust process or host memory and consume substantial disk space, resulting in denial of service.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.