Null Pointer Dereference in Freedesktop Poppler
CVE-2026-93312

5.3MEDIUM

Key Information:

Vendor

Freedesktop

Status
Poppler
Vendor
CVE Published:
18 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-93312?

A flaw exists in Freedesktop Poppler version 26.07.0, specifically in the JBIG2Stream::rewind function located in poppler/JBIG2Stream.cc. This vulnerability allows for a null pointer dereference, which can be exploited remotely, potentially leading to unexpected application behavior or crashes. Users are strongly advised to upgrade to version 26.08.0 to mitigate this vulnerability.

Affected Version(s)

Poppler 26.07.0

Poppler 26.08.0

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-2026-93312 - Proof of Concept

References

https://vuldb.com/vuln/406610
vdb-entrytechnical-description
https://vuldb.com/vuln/406610/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-93312
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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)
.