How severe is CVE-2025-10354?

CVE-2025-10354 has a CVSS 4.0 base score of 5.1, rated medium severity.

Is CVE-2025-10354 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-10354?

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

Does CVE-2025-10354 have an EU (EUVD) identifier?

Yes. CVE-2025-10354 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209538.

When was CVE-2025-10354 published?

CVE-2025-10354 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2025-10354

CVE-2025-10354 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.1. 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 4.0 base score 5.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209538
Weakness: CWE-79
Published: 2026-04-21
Last modified: 2026-06-17

Description

Cross-Site Scripting (XSS) vulnerability reflected in Semantic MediaWiki. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the '/index.php/Speciaal:GefacetteerdZoeken' endpoint parameter. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Frequently asked questions

What is CVE-2025-10354?: Cross-Site Scripting (XSS) vulnerability reflected in Semantic MediaWiki. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the '/index.php/Speciaal:GefacetteerdZoeken' endpoint parameter. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
How severe is CVE-2025-10354?: CVE-2025-10354 has a CVSS 4.0 base score of 5.1, rated medium severity.
Is CVE-2025-10354 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-10354?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-10354 have an EU (EUVD) identifier?: Yes. CVE-2025-10354 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209538.
When was CVE-2025-10354 published?: CVE-2025-10354 was published on 2026-04-21 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-xss-semantic-mediawiki

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