CVE-2020-21146 json
Feehi CMS vulnerable to Cross-site Scripting in Username Field
published 2021-01-21 5 y ago modified 2026-06-17 4 mo ago also GHSA-v762-47vh-j7q3 , EUVD-2022-5305
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Feehi CMS 2.0.8 is affected by a cross-site scripting (XSS) vulnerability. When the user name is inserted as JavaScript code, browsing the post will trigger the XSS.
Patch / fix
Exploit prediction
0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/liufee/cms/issues/43 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/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 | 3.1 | 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 | feehi/cms | <2.0.8.1 |
2.0.8.1 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/liufee/cms/commit/e92f6877d96e53498101d0664174956e94223d6e
web
-
github.com
/liufee/cms/issues/43
web, exploit, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-21146
advisory
-
github.com
/liufee/cms
package
Sources
- CVE List CVE-2020-21146
- GitHub Advisory GHSA-v762-47vh-j7q3
- NVD CVE-2020-21146
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.