Vulnerability · Published Sep 21, 2025 · Assigned by VulDB
CVE-2025-10758htmly Custom Field post cross site scripting
Low 2.4
In plain English
A low-severity cross-site scripting in htmly. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Official 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 (as reported)
Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
References
- VDB-325113 | htmly Custom Field post cross site scripting vdb-entry, technical-description
- VDB-325113 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #645806 | Htmly Htmly CMS 3.1.0 Cross Site Scripting third-party-advisory
- https://www.notion.so/inmog/Reported-Vulnerability-XSS-Vulnerability-in-htmly-v3-1-0-2627752d1edd804fbd71f310bde44d11 exploit