Artifex MuPDF up to 1.28.5 Signature Locking source/pdf/pdf-xref.c free_char_list double free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.9$0-$5k2.62

Summaryinfo

A vulnerability was found in Artifex MuPDF up to 1.28.5 and classified as problematic. Affected is the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. Executing a manipulation can lead to double free. The identification of this vulnerability is CVE-2026-112036. The attack may be launched remotely. Furthermore, there is an exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Artifex MuPDF up to 1.28.5. It has been declared as problematic. This vulnerability affects the function free_char_list of the file source/pdf/pdf-xref.c of the component Signature Locking. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect availability.

The advisory is shared for download at bugs.ghostscript.com. This vulnerability was named CVE-2026-112036. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known.

It is possible to download the exploit at bugs.ghostscript.com. It is declared as proof-of-concept.

Applying the patch 3984925b660afb8a781ddf504021e91be1bc671e is able to eliminate this problem. The bugfix is ready for download at ghostscript.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 3984925b660afb8a781ddf504021e91be1bc671e

Timelineinfo

10/18/2026 Advisory disclosed
10/18/2026 +0 days VulDB entry created
10/18/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: artifex.com

Advisory: 709768
Status: Confirmed

CVE: CVE-2026-112036 (🔒)
GCVE (CVE): GCVE-0-2026-112036
GCVE (VulDB): GCVE-100-421684
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/18/2026 11:17
Changes: 10/18/2026 11:17 (60)
Complete: 🔍
Submitter: suyuanwang
Cache ID: 216::103

Submitinfo

Accepted

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