Microweber XSS Vulnerability in the homepage Endpoint

published 2025-08-01 15 mo ago modified 2026-06-17 4 mo ago also GHSA-2x2j-3c2v-g3c2 , EUVD-2025-23365

cvss: 7.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

Microweber CMS 2.0 is vulnerable to Cross Site Scripting (XSS)in the /projects/profile, homepage endpoint via the last name field.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 15 mo ago (2025-08-01)

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/progprnv/CVE-Reports/blob/main/CVE-2025-51504 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
CNA	3.1	7.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
packagist	microweber/microweber	>=2.0.0, <=2.0.19	no fix listed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /progprnv/CVE-Reports/blob/main/CVE-2025-51504
web, exploit, third-party-advisory
github.com /progprnv/CVE-Reports/blob/main/MICROWEBER%20%5BLive%20Panel%5D%20Stored%20XSS%20in%20profile%20path.md
web, broken-link
github.com /progprnv/CVE-Reports
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2025-51504
advisory
github.com /microweber/microweber
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary