VulnerabilityPublished 26 Mar 2026

CVE-2026-4848: dameng100 muucmf · Cross-site Scripting

Affects dameng100 muucmfSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
dameng100muucmf	Affected =1.9.5.20260309	Fixed in–

AI-suggested

Given the absence of an official patch, organizations should implement immediate compensating controls. First, apply strict input validation and output encoding on the 'Name' parameter within the /admin/extend/list.html page to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Deploy or update Web Application Firewalls (WAFs) with custom rules to detect and block XSS payloads targeting this parameter. Limit administrative interface exposure by restricting access to trusted IP addresses or via VPNs. Educate users and administrators about the risks of interacting with suspicious links or inputs. Monitor logs for unusual activity related to the affected endpoint. Additionally, consider isolating or temporarily disabling the vulnerable functionality if feasible until an official patch is released. Engage with the vendor for updates and subscribe to security advisories for future patches.

Description

A vulnerability was determined in dameng100 muucmf 1.9.5.20260309. This affects an unknown function of the file /admin/extend/list.html. Executing a manipulation of the argument Name can lead to cross site scripting. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The primary impact of CVE-2026-4848 is the potential for attackers to execute arbitrary scripts in the context of authenticated users, leading to session hijacking, credential theft, or unauthorized actions within the affected application. This can undermine user trust and compromise sensitive administrative functions accessible via the /admin/extend/list.html interface. Although the vulnerability does not directly affect system availability or cause data loss, the integrity and confidentiality of user sessions and data can be compromised. Organizations relying on dameng100 muucmf 1.9.5.20260309 for content management or administrative tasks may face increased risk of targeted attacks, especially if attackers leverage social engineering to induce user interaction. The lack of vendor response and patch availability prolongs exposure, potentially increasing the attack surface. If exploited at scale, this vulnerability could facilitate broader attacks such as privilege escalation or lateral movement within networks, depending on the application's role and integration.

Summary

CVE-2026-4848 is a cross-site scripting vulnerability identified in dameng100 muucmf version 1.9.5.20260309. The vulnerability resides in an unspecified function within the /admin/extend/list.html file, specifically involving the 'Name' parameter. An attacker can remotely craft malicious input to this parameter, which is not properly sanitized or encoded, allowing the injection and execution of arbitrary JavaScript code in the context of the victim's browser. This type of vulnerability can be exploited to steal session cookies, perform actions on behalf of authenticated users, or deliver malicious payloads. The attack vector is network accessible (AV:N), requires no privileges (PR:N), and no authentication (AT:N), but does require user interaction (UI:P). The vulnerability does not affect confidentiality or availability directly but impacts integrity and limited confidentiality aspects (VI:L, VC:N, VA:N). The vendor was notified but has not issued a patch or response, and no official remediation guidance is available. Public exploit code has been disclosed, increasing the likelihood of exploitation attempts. The CVSS 4.0 score of 5.3 categorizes this as a medium severity issue, reflecting moderate risk due to ease of exploitation and potential impact on user trust and session security.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Mar 2026, 07:31 UTC

Technical details

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