CVE-2026-90502: stilleshan ServerStatus Stats Generation main.cpp cross site scripting

Severity: low (CVSS 3.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-13 · updated 2026-09-14
Weakness: CWE-79

Description

A vulnerability was detected in stilleshan ServerStatus 1.0/2.0. Impacted is an unknown function of the file server/src/main.cpp of the component Stats Generation. Performing a manipulation of the argument custom results in cross site scripting. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

stilleshan ServerStatus: 1.0, 2.0

References

https://github.com/BlkSword/POC/blob/main/ServerStatus%20Stored%20.pdf
https://vuldb.com/cve/CVE-2026-90502
https://vuldb.com/submit/895248
https://vuldb.com/vuln/403090
https://vuldb.com/vuln/403090/cti

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