Vulnerability · Published Mar 26, 2026 · Assigned by VulDB

CVE-2026-4845dameng100 muucmf index.html cross site scripting

Medium 4.3

In plain English

A medium-severity cross-site scripting in muucmf from dameng100. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A flaw has been found in dameng100 muucmf 1.9.5.20260309. Impacted is an unknown function of the file /admin/Member/index.html. This manipulation of the argument Search causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
dameng100	muucmf	1.9.5.20260309

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-353150 | dameng100 muucmf index.html cross site scripting vdb-entry, technical-description
VDB-353150 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #776174 | MuuCmf https://gitee.com/dameng100/muucmf 1.9.5.20260309 Improper Neutralization of Alternate XSS Syntax third-party-advisory
https://thinhneee.github.io/posts/muucmf-xss/ exploit