CVE-2021-24859 json
User Meta Shortcodes <= 0.5 - Contributor+ Unauthorized Arbitrary User Metadata Access
published 2021-12-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11771
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user with a role as low as contributor to access other users metadata by specifying the user login as a parameter. This makes the WP instance vulnerable to data extrafiltration, including password hashes
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- Unknown User meta shortcodes
Classification
- Weakness
-
- CWE-284 Improper Access Control
- Technology feeds
References
-
wpscan.com
/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24859
- NVD CVE-2021-24859
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.