CVE-2021-24311 json
External Media < 1.0.34 - Authenticated Arbitrary File Upload
published 2021-06-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11225
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable to arbitrary file uploads via any authenticated users.
Patch / fix
- external_media_project external_media 1.0.34
Exploit prediction
1.77% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/4fb90999-6f91-4200-a0cc-bfe9b34a5de9 referenced PoC, tagged "exploit" by a source, unverified
- wordfence.com https://www.wordfence.com/blog/2021/05/critical-vulnerability-patched-in-external-media-plugin/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/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 |
Affected products
- Unknown External Media
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
-
wpscan.com
/vulnerability/4fb90999-6f91-4200-a0cc-bfe9b34a5de9
exploit, third-party-advisory
-
wordfence.com
/blog/2021/05/critical-vulnerability-patched-in-external-media-plugin/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24311
- NVD CVE-2021-24311
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.