CVE-2020-11807 json
Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitra…
published 2020-05-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4149
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitrary PHP code (and sometimes terminal commands) on a server by making an avatar update and then visiting the avatar file under the /images/ path.
Patch / fix
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gist.github.com https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageServ
patch, third-party-advisory
-
gist.github.com
/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee
exploit, third-party-advisory
Sources
- CVE List CVE-2020-11807
- NVD CVE-2020-11807
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.