Is there a public PoC exploit available for CVE-2025-10758?

Yes, a public proof-of-concept exploit is available for CVE-2025-10758. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-10758?

Within 30 days: Identify affected systems running htmly and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

CVE-2025-10758

Q: What is the CVSS score of CVE-2025-10758?

CVE-2025-10758 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Cross-site Scripting (XSS) (CWE-79)

2025-09-21 cna@vuldb.com

XSS

1.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.9 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.8 (MEDIUM) 1.9 (LOW)

Analysis Generated

Mar 28, 2026 - 19:13 vuln.today

PoC Detected

Oct 08, 2025 - 18:20 vuln.today

Public exploit code

CVE Published

Sep 21, 2025 - 01:15 nvd

MEDIUM 4.8

DescriptionCVE.org

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.

AnalysisAI

A security vulnerability has been detected in htmly up to 3.1.0. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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 include: Htmly. Version information: up to 3.1.0..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-10758 vulnerability details – vuln.today

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