Heap-Based Buffer Overflow in gdk-pixbuf Library Impacting JPEG Image Processing
CVE-2026-5201

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
31 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5201?

A flaw exists within the gdk-pixbuf library that leads to a heap-based buffer overflow specifically in the JPEG image loader. This vulnerability arises due to insufficient validation of color component counts when handling specially crafted JPEG images. Attackers can exploit this vulnerability remotely without requiring any user interaction, notably through mechanisms like thumbnail generation. If successfully exploited, this flaw can result in application crashes and create denial of service (DoS) conditions, exposing users and systems to risks.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5201
Created by kagancapar

References

https://access.redhat.com/security/cve/CVE-2026-5201
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2453291
issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/304

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Kağan Çapar for reporting this issue.
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