How severe is CVE-2025-53500?

CVE-2025-53500 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-53500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53500?

CVE-2025-53500 affects Malvineous Masseditregex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53500?

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

Does CVE-2025-53500 have an EU (EUVD) identifier?

Yes. CVE-2025-53500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19887.

When was CVE-2025-53500 published?

CVE-2025-53500 was published on 2025-07-03 and last updated on 2026-06-17.

CVE-2025-53500

CVE-2025-53500 is a medium-severity vulnerability in Malvineous Masseditregex with a CVSS 3.x base score of 5.6. 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 5.6)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19887
Weakness: CWE-79
Affected product: Malvineous Masseditregex
Published: 2025-07-03
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - MassEditRegex Extension allows Stored XSS.This issue affects Mediawiki - MassEditRegex Extension: from 1.39.X before 1.39.12, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Frequently asked questions

What is CVE-2025-53500?: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - MassEditRegex Extension allows Stored XSS.This issue affects Mediawiki - MassEditRegex Extension: from 1.39.X before 1.39.12, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
How severe is CVE-2025-53500?: CVE-2025-53500 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-53500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53500?: CVE-2025-53500 affects Malvineous Masseditregex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53500?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-53500 have an EU (EUVD) identifier?: Yes. CVE-2025-53500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19887.
When was CVE-2025-53500 published?: CVE-2025-53500 was published on 2025-07-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:malvineous:masseditregex:-:*:*:*:*:mediawiki:*:*

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