Resource Consumption Vulnerability in a2ui Project by a2ui
CVE-2026-118276

5.1MEDIUM

Key Information:

Vendor

A2ui-project

Status
A2ui
Vendor
CVE Published:
28 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-118276?

A critical vulnerability has been identified in the a2ui project affecting the Parser component. Specifically, the issue arises in the formatString function within the expression_parser.ts file, which can lead to significant resource consumption when manipulated. This vulnerability can be exploited remotely, allowing attackers to impact system performance. Publicly disclosed exploits may exist, and it is essential for users to patch their installations to mitigate potential risks. The recommended patch is identified by the commit 1f71d1aac1b145ef57c7526f9e0cff316f5934e2, which should be applied immediately to secure systems.

Affected Version(s)

a2ui 0.10.0

a2ui 0.10.1

a2ui 0.10.2

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-2026-118276 - Proof of Concept

References

https://vuldb.com/vuln/427574
vdb-entrytechnical-description
https://vuldb.com/vuln/427574/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-118276
third-party-advisory

CVSS V4

Score:
5.1
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

ez-lbz (VulDB User)
.