CVE-2026-112036: Buffer Overflow (CVSS 4.3)

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-415 CWE-415

References

Other References

http://www.ghostscript.com/cgi-bin/findgit.cgi?3984925b660afb8a781ddf504021e91be1bc671e https://artifex.com/ https://bugs.ghostscript.com/attachment.cgi?id=28609 https://bugs.ghostscript.com/show_bug.cgi?id=709768 https://vuldb.com/cve/CVE-2026-112036 https://vuldb.com/submit/1008495 https://vuldb.com/vuln/421684 https://vuldb.com/vuln/421684/cti

Frequently Asked Questions

What is CVE-2026-112036? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-112036? +

CVE-2026-112036 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2026-112036? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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