How severe is CVE-2026-22710?

CVE-2026-22710 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-22710 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22710?

CVE-2026-22710 primarily affects Wikimedia Wikibase. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-22710?

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

Does CVE-2026-22710 have an EU (EUVD) identifier?

Yes. CVE-2026-22710 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1816.

When was CVE-2026-22710 published?

CVE-2026-22710 was published on 2026-01-09 and last updated on 2026-06-17.

CVE-2026-22710

CVE-2026-22710 is a medium-severity vulnerability in Wikimedia Wikibase with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 2.3
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1816
Weakness: CWE-79
Affected product: Wikimedia Wikibase
Published: 2026-01-09
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.

Frequently asked questions

What is CVE-2026-22710?: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.
How severe is CVE-2026-22710?: CVE-2026-22710 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-22710 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22710?: CVE-2026-22710 primarily affects Wikimedia Wikibase. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-22710?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22710 have an EU (EUVD) identifier?: Yes. CVE-2026-22710 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1816.
When was CVE-2026-22710 published?: CVE-2026-22710 was published on 2026-01-09 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:wikimedia:wikibase:1.39:*:*:*:*:mediawiki:*:*
cpe:2.3:a:wikimedia:wikibase:1.43:*:*:*:*:mediawiki:*:*
cpe:2.3:a:wikimedia:wikibase:1.44:*:*:*:*:mediawiki:*:*
cpe:2.3:a:wikimedia:wikibase:1.45:*:*:*:*:mediawiki:*:*

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