Medium severity · published Aug 28, 2026
CVE-2026-58107
Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun
5.5
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
CodeChecker · Ericsson
before 6.28.3 · source: vendor
Affected product
CO
CodeChecker
Ericsson
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