CVE-2026-3308
CVE-2026-3308
Description
An integer overflow vulnerability in 'pdf-image.c' in Artifex's MuPDF version 1.27.0 allows an attacker to maliciously craft a PDF that can trigger an integer overflow within the 'pdf_load_image_imp' function. This allows a heap out-of-bounds write that could be exploited for arbitrary code execution.
INFO
Published Date :
March 31, 2026, 2:16 p.m.
Last Modified :
April 2, 2026, 7:21 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-3308
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update MuPDF to a patched version.
- Avoid processing untrusted PDF files.
- Review code for similar integer overflow issues.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-3308.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3308 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-3308
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3308 vulnerability anywhere in the article.
-
Daily CyberSecurity
Sandbox Escape: Critical Flatpak Flaw Grants Full Host Access
Flatpak, the widely-used system for building, distributing, and running sandboxed desktop applications on Linux, has been hit by a critical security vulnerability. The flaw, tracked as CVE-2026-34078 ... Read more
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Daily CyberSecurity
Breaking the Input: Sandbox Escape Hits libinput, Exposing Leading Linux Desktops
The core of modern Linux input handling is facing a significant security challenge. libinput, the essential library that manages everything from mouse clicks to touchpad gestures for display servers, ... Read more
-
Daily CyberSecurity
The MuPDF Vulnerability Turning “Safe” PDFs into System Hijackers
A significant security flaw has been unearthed in Artifex MuPDF, a popular framework prized for its speed and versatility in handling PDFs, XPS, and e-books. Labeled as CVE-2026-3308, this integer ove ... Read more
The following table lists the changes that have been made to the
CVE-2026-3308 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 02, 2026
Action Type Old Value New Value Added Reference https://www.kb.cert.org/vuls/id/951662 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 01, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-190 -
New CVE Received by [email protected]
Mar. 31, 2026
Action Type Old Value New Value Added Description An integer overflow vulnerability in 'pdf-image.c' in Artifex's MuPDF version 1.27.0 allows an attacker to maliciously craft a PDF that can trigger an integer overflow within the 'pdf_load_image_imp' function. This allows a heap out-of-bounds write that could be exploited for arbitrary code execution. Added Reference https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85 Added Reference https://github.com/ArtifexSoftware/mupdf Added Reference https://github.com/ArtifexSoftware/mupdf/commit/a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85