CVE-2025-11896 Stack overflow in Xpdf 4.05 due to object loop in PDF CMap
A malicious PDF with a CMap object loop causes infinite recursion and stack overflow in Xpdf, crashing the application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-11896?
CVE-2025-11896 is a low-severity denial of service vulnerability in Xpdf, published on 16 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Xpdf 4.05 (and earlier), a PDF object loop in a CMap, via the "UseCMap" entry, leads to infinite recursion and a stack overflow.
Weakness: CWE-674
Which versions are affected by CVE-2025-11896?
Linux distribution packages (22)
poppler SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 24.03.0-150600.3.27.1 |
poppler SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 0.79.0-150200.3.49.1 |
poppler SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 24.03.0-150600.3.27.1 |
poppler SUSE:Linux Enterprise Module for Package Hub 15 SP6 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt5 SUSE:Linux Enterprise Module for Package Hub 15 SP6 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt6 SUSE:Linux Enterprise Module for Package Hub 15 SP6 | All versions | 24.03.0-150600.3.27.1 |
poppler SUSE:Linux Enterprise Module for Package Hub 15 SP7 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt5 SUSE:Linux Enterprise Module for Package Hub 15 SP7 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt6 SUSE:Linux Enterprise Module for Package Hub 15 SP7 | All versions | 24.03.0-150600.3.27.1 |
poppler SUSE:Linux Enterprise Server 16.0 | All versions | 25.04.0-160000.4.1 |
poppler-qt6 SUSE:Linux Enterprise Server 16.0 | All versions | 25.04.0-160000.4.1 |
poppler SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 0.43.0-16.70.1 |
poppler-qt SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 0.43.0-16.70.1 |
poppler SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 25.04.0-160000.4.1 |
poppler-qt6 SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 25.04.0-160000.4.1 |
poppler openSUSE:Leap 15.6 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt5 openSUSE:Leap 15.6 | All versions | 24.03.0-150600.3.27.1 |
poppler-qt6 openSUSE:Leap 15.6 | All versions | 24.03.0-150600.3.27.1 |
poppler openSUSE:Leap 16.0 | All versions | 25.04.0-160000.4.1 |
poppler-qt5 openSUSE:Leap 16.0 | All versions | 25.04.0-160000.4.1 |
poppler-qt6 openSUSE:Leap 16.0 | All versions | 25.04.0-160000.4.1 |
poppler openSUSE:Tumbleweed | All versions | 25.09.1-4.1 |
How do I fix CVE-2025-11896?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-11896 being exploited?
There is no known exploitation of CVE-2025-11896 in the wild and no public exploit code.
Sources
Also known as GHSA-j566-7876-3m7f, SUSE-SU-2025:4412-1, SUSE-SU-2025:4434-1, SUSE-SU-2025:4439-1, SUSE-SU-2026:0081-1, SUSE-SU-2026:20911-1 and 3 more.