Vulnerability · Published Aug 28, 2026 · Assigned by ERIC
CVE-2026-58107Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun
Medium 5.5
In plain English
A medium-severity resource allocation without limits in CodeChecker from Ericsson. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Ericsson | CodeChecker | 0 – before 6.28.3 |
Weakness: CWE-409, CWE-770 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:A/RE:L