What’s Vulnerable › Vulnerabilities

CVE-2026-0668: VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-07 · updated 2026-10-26
• Weakness: CWE-1333

Description

Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.

Affected products

• Wikimedia Foundation MediaWiki - VisualData Extension: all versions

References

• https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3
• https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5
• https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf
• https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8
• https://phabricator.wikimedia.org/T387008

Get alerted when CVE-2026-0668 or the next vulnerability affects your stack