CVE-2026-18644: danpros HTMLy Delete Username Endpoint htmly.php unlink path traversal

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-03 · updated 2026-10-23
Weakness: CWE-22

Description

A vulnerability was identified in danpros HTMLy up to 3.1.1. Affected by this issue is the function unlink of the file /system/htmly.php of the component Delete Username Endpoint. Such manipulation of the argument File leads to path traversal. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

danpros HTMLy: 3.1.0, 3.1.1

References

https://github.com/orionyan520/cve_report/issues/5
https://vuldb.com/cve/CVE-2026-18644
https://vuldb.com/submit/854991
https://vuldb.com/vuln/385563
https://vuldb.com/vuln/385563/cti
https://vuldb.com/submit/854991

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