Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun (CVE-2026-58107) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-58107

Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun

Answer in brief

CVE-2026-58107 records a Unknown severity vulnerability in Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun. The current sources do not mark it as known exploited. The current feed maps Ericsson/CodeChecker (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Ericsson/CodeChecker (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Ericsson/CodeCheckergeneric	>=0 <6.28.3	6.28.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for Ericsson/CodeChecker.
Review the reported fix. Update Ericsson/CodeChecker to 6.28.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.