Integer Overflow in Freedesktop Poppler Affects JBIG2Stream Functionality
CVE-2026-93313

5.3MEDIUM

Key Information:

Vendor

Freedesktop

Status
Poppler
Vendor
CVE Published:
18 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-93313?

A critical vulnerability has been identified in Freedesktop Poppler that allows an attacker to exploit the JBIG2Stream::readCodeTableSeg function. By manipulating this function, an integer overflow can occur, potentially enabling remote exploitation of the software. This vulnerability was made public, and a patch has been released to address the issue. Users are strongly encouraged to apply the patch immediately to secure their installations and prevent potential attacks.

Affected Version(s)

Poppler 26.07.0

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-2026-93313 - Proof of Concept

References

https://vuldb.com/vuln/406612
vdb-entrytechnical-description
https://vuldb.com/vuln/406612/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-93313
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

r1ck99 (VulDB User)
.