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01 Record

CVE-2026-0668

VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

MediumPUBLISHEDCNA: wikimedia-foundation
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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02 Description

VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.47% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 40.9% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-26.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-01-07 17:36Z9 MO AGO
Last updated
2026-01-07 19:17Z9 MO AGO
Reserved
2026-01-07
Assigning CNA
wikimedia-foundation
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-1333Inefficient Regular Expression ComplexityBase
Data version
5.2
Document digest
65d9234f892721c9fc4eeb9dd61fc405739c97af8c0d018b1d6a708a20bc50a6

05 Affected products

VendorProductVersionsPlatforms
Wikimedia FoundationMediaWiki - VisualData Extension1.45—

06 References