CVE-2026-112036

Artifex MuPDF Signature Locking pdf-xref.c free_char_list double free

MEDIUM
4.3
CVSS Score
Published: October 19, 2026 at 12:45 AM UTC
Updated: October 19, 2026 at 05:17 PM UTC
1 product affected across 1 vendorMuPDF

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.28.01.28.11.28.21.28.31.28.41.28.5

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (8)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/421684
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/421684/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-112036
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/1008495
Product
Source: cverecord
https://artifex.com/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-415CWE-119

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