WCMS Registration setregister cross site scripting

published 2025-03-31 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-8714

cvss: 2.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

A vulnerability classified as problematic has been found in WCMS 11. This affects an unknown part of the file /index.php?anonymous/setregister of the component Registration. The manipulation of the argument Username leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-31)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/caigo8/CVE-md/blob/main/wcms11/%E5%AD%98%E5%82%A8%E5%9E%8BXSS.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	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
CNA	3.1	2.4	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
CNA	3.0	2.4	CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
CNA	2.0	3.3	AV:N/AC:L/Au:M/C:N/I:P/A:N
CNA	4.0	4.8	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:X/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
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

n/a WCMS

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-94 Improper Control of Generation of Code

References

github.com /caigo8/CVE-md/blob/main/wcms11/%E5%AD%98%E5%82%A8%E5%9E%8BXSS.md
exploit, third-party-advisory
vuldb.com /?id.302031
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.302031
signature, permissions-required, vdb-entry
vuldb.com /?submit.523896
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-2979
NVD CVE-2025-2979

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