CVE-2021-30149 in the critical feed json
Composr 10.0.36 allows upload and execution of PHP files.
published 2021-04-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17086
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.1%
- EPSS 10.1% chance of exploitation in 30 days, percentile 95%
- public exploits
- 1
- Exploit-DB
Summary
Composr 10.0.36 allows upload and execution of PHP files.
Patch / fix
Timeline
- Published
- First public exploit (EDB-49753)
Exploit prediction
10.06% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-49753 Composr 10.0.36 - Remote Code Execution webapps, 2021-04-08
- packetstormsecurity.com http://packetstormsecurity.com/files/162128/Composr-10.0.36-Shell-Upload.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
gitlab.com
/composr-foundation/composr/commit/a71c44e03
patch, third-party-advisory
-
packetstormsecurity.com
/files/162128/Composr-10.0.36-Shell-Upload.html
exploit, third-party-advisory
Sources
- CVE List CVE-2021-30149
- NVD CVE-2021-30149
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.