CVE-2021-28115 json
The OUGC Feedback plugin before 1.8.23 for MyBB allows XSS via the comment field of feedback during an edit operation.
published 2021-03-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14816
- cvss
- 6.1
- version 3.1, 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
The OUGC Feedback plugin before 1.8.23 for MyBB allows XSS via the comment field of feedback during an edit operation.
Patch / fix
Exploit prediction
0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- packetstormsecurity.com http://packetstormsecurity.com/files/161746/MyBB-OUGC-Feedback-1.8.22-Cross-Site-Scripting.html 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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/Sama34/OUGC-Feedback/pull/31/commits/ceef7c06359e5dcbaffe90a40884265c5754068c
patch, third-party-advisory
-
packetstormsecurity.com
/files/161746/MyBB-OUGC-Feedback-1.8.22-Cross-Site-Scripting.html
exploit, third-party-advisory
Sources
- CVE List CVE-2021-28115
- NVD CVE-2021-28115
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.