CVE-2021-43100 json
A File Upload vulnerability exists in bbs 5.3 is via TopicManageAction.java in a GetType function, which lets a remote malicious user execu…
published 2022-03-28 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30051
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
A File Upload vulnerability exists in bbs 5.3 is via TopicManageAction.java in a GetType function, which lets a remote malicious user execute arbitrary code.
Exploit prediction
1.63% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/diyhi/bbs/issues/51 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/diyhi/bbs/issues/51
exploit, third-party-advisory
Sources
- CVE List CVE-2021-43100
- NVD CVE-2021-43100
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