CVE-2021-42045
NixOS vulnerability analysis and mitigation

Overview

An issue was discovered in SecurePoll in the Growth extension in MediaWiki through 1.36.2. Simple polls allow users to create alerts by changing their User-Agent HTTP header and submitting a vote (MITRE CVE).

Technical details

The vulnerability exists in the SecurePoll component of MediaWiki's Growth extension, where insufficient validation of User-Agent HTTP headers during poll vote submission can lead to security issues. The vulnerability affects MediaWiki versions through 1.36.2 (MITRE CVE).

Impact

The vulnerability allows malicious users to create unwanted alerts in the system by manipulating their User-Agent HTTP header during poll vote submission (MITRE CVE).

Mitigation and workarounds

A fix has been implemented and can be found in the Wikimedia Gerrit repository (Wikimedia Gerrit).

Additional resources


SourceThis report was generated using AI

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-12819HIGH8.1
  • NixOSNixOS
  • pgbouncer
NoYesDec 03, 2025
CVE-2025-20777MEDIUM6.7
  • NixOSNixOS
  • android
NoNoDec 02, 2025
CVE-2025-65105MEDIUM5.3
  • NixOSNixOS
  • apptainer
NoYesDec 02, 2025
CVE-2025-20789MEDIUM4.4
  • NixOSNixOS
  • android
NoNoDec 02, 2025
CVE-2025-20788MEDIUM4.4
  • NixOSNixOS
  • android
NoNoDec 02, 2025

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management