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  4. CVE 2026 112036 artifex mupdf signature locking pdf xrefc
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-112036

Artifex MuPDF Signature Locking pdf-xref.c free_char_list double freeCVE-2026-112036

Answer in brief

CVE-2026-112036 records a Medium severity (CVSS 5.3) vulnerability in Artifex MuPDF Signature Locking pdf-xref.c free_char_list double free. The current sources do not mark it as known exploited. The current feed maps Artifex/MuPDF (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 Oct 19, 2026Updated Oct 19, 2026Source checked Oct 19, 2026First seen by HOL Oct 19, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.3. 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 Artifex/MuPDF (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Artifex/MuPDFgeneric1.28.0 || 1.28.1 || 1.28.2 || 1.28.3 || 1.28.4 || 1.28.5Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Artifex/MuPDF.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 19, 2026

Sources and claim methodology

  • Source referenceartifex.com
  • Source referencebugs.ghostscript.com
  • Source referencebugs.ghostscript.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referenceghostscript.com
Upstream source description

A vulnerability was detected in Artifex MuPDF up to 1.28.5. This impacts the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Performing a manipulation results in double free. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named 3984925b660afb8a781ddf504021e91be1bc671e. To fix this issue, it is recommended to deploy a patch.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Tencent ncnn MatMul matmul.cpp matmul_transb out-of-boundsAlso CWE-119

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-415, CWE-119
Source
CVE List V5
Source checked
Oct 19, 2026
References
8 linked sources
Open source record