CVE-2025-10758: htmly Custom Field post cross site scripting

Severity: medium (CVSS 4.8 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: yes
Published: 2025-09-21 · updated 2026-10-19
Weakness: CWE-79

Description

A security vulnerability has been detected in htmly up to 3.1.0. The impacted element is an unknown function of the file /htmly/admin/field/post of the component Custom Field Handler. Such manipulation of the argument label leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

htmly: through 3.1.0

References

https://vuldb.com/?ctiid.325113
https://vuldb.com/?id.325113
https://vuldb.com/?submit.645806
https://www.notion.so/inmog/Reported-Vulnerability-XSS-Vulnerability-in-htmly-v3-1-0-2627752d1edd804fbd71f310bde44d11

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