How severe is CVE-2026-0668?

CVE-2026-0668 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-0668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0668?

CVE-2026-0668 affects Wikisphere Visualdata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0668?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-0668 have an EU (EUVD) identifier?

Yes. CVE-2026-0668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1176.

When was CVE-2026-0668 published?

CVE-2026-0668 was published on 2026-01-07 and last updated on 2026-06-17.

CVE-2026-0668

CVE-2026-0668 is a medium-severity vulnerability in Wikisphere Visualdata with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1176
Weakness: CWE-1333
Affected product: Wikisphere Visualdata
Published: 2026-01-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-0668?: Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.
How severe is CVE-2026-0668?: CVE-2026-0668 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-0668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0668?: CVE-2026-0668 affects Wikisphere Visualdata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0668?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0668 have an EU (EUVD) identifier?: Yes. CVE-2026-0668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1176.
When was CVE-2026-0668 published?: CVE-2026-0668 was published on 2026-01-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wikisphere:visualdata:-:*:*:*:*:mediawiki:*:*

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