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Fencer Intel
medium 6.1

CVE-2025-51501 json

Microweber has Reflected XSS Vulnerability in the id Parameter

published last yr. modified 4mo ago also GHSA-8357-fjvx-xrm8 , EUVD-2025-23377

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known, plus a Nuclei check

Summary

Reflected Cross-Site Scripting (XSS) in the id parameter of the live_edit.module_settings API endpoint in Microweber CMS2.0 allows execution of arbitrary JavaScript.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Microweber CMS2.0 - Cross-Site Scripting nuclei detection template
  • github.com https://github.com/progprnv/CVE-Reports/blob/main/CVE-2025-51501 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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

Sources

Fencer Intel 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.