CVE-2018-20757 json
MODX Revolution allows XSS through extended user fields
published 2019-02-06 7 y ago modified 2026-06-17 4 mo ago also GHSA-gm2g-65wj-43g8 , EUVD-2018-13300
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
MODX Revolution through v2.7.0-pl allows XSS via an extended user field such as Container name or Attribute name.
Patch / fix
- packagist modx/revolution 2.7.1-pl
Exploit prediction
0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/modxcms/revolution/issues/14104 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | modx/revolution | <2.7.1-pl |
2.7.1-pl |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/modxcms/revolution/issues/14104
web, exploit, patch, third-party-advisory
-
github.com
/modxcms/revolution/commit/489b13c61673ea0b19124e18cf1f3e7673f8aa64
web
-
nvd.nist.gov
/vuln/detail/CVE-2018-20757
advisory
-
github.com
/modxcms/revolution
package
Sources
- CVE List CVE-2018-20757
- GitHub Advisory GHSA-gm2g-65wj-43g8
- NVD CVE-2018-20757
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.