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CVE-2025-53370

Starcitizen.tools Citizen cross-site scripting (XSS)

8.6 HIGHPublic exploitEPSS 0.38%
  1. Published3 Jul 2025

Description

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, short descriptions set via the ShortDescription extension are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page. This issue has been patched in version 3.4.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Affected products

Starcitizen.tools Citizen≥ 1.9.4 < 3.4.0

Remediation

Fixed in
Starcitizen.tools Citizen≥ 3.4.0

References

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Frequently asked

Is CVE-2025-53370 being actively exploited?

CVE-2025-53370 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.38%.

How severe is CVE-2025-53370?

CVE-2025-53370 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 0.38% probability of exploitation.

Which products are affected by CVE-2025-53370?

Affected products include Starcitizen.tools Citizen.

How do I fix CVE-2025-53370?

Upgrade affected software to a fixed version, for example Starcitizen.tools Citizen 3.4.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-53370 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.