Stack-based Buffer Overflow in GPAC Affects Local Host Operations
CVE-2026-91090

2.4LOW

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91090?

A vulnerability has been identified in GPAC versions up to f1219cde, specifically in the gf_node_activate_ex function located in scenegraph/base_scenegraph.c. This flaw allows for a stack-based buffer overflow, which can be exploited by attackers on the local host. Given the public disclosure of this exploit, it is imperative for users to upgrade to version abi-16.23 to safeguard against potential threats. The corresponding patch for this vulnerability is identified under commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24.

Affected Version(s)

GPAC f1219cde

GPAC abi-16.23

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-2026-91090 - Proof of Concept

References

https://vuldb.com/vuln/403652
vdb-entrytechnical-description
https://vuldb.com/vuln/403652/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91090
third-party-advisory

CVSS V4

Score:
2.4
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Local
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

wsstssw (VulDB User)
.