CVE-2021-24859
User Meta Shortcodes <= 0.5 - Contributor+ Unauthorized Arbitrary User Metadata Access
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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
- Record
CVE-2021-24859- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
CVE List No score
User Meta Shortcodes <= 0.5 - Contributor+ Unauthorized Arbitrary User Metadata Access
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
- Record
CVE-2021-24859- Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2021-11771 No score
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
- Record
EUVD-2021-11771- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m96c-8jmv-4r54 No score
The User Meta Shortcodes WordPress plugin through 0.5 registers a shortcode that allows any user...
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
- Record
GHSA-m96c-8jmv-4r54- Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24859 is a medium vulnerability (CVSS 4.3) in Unknown User Meta Shortcodes, published December 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.81%, the 57th percentile. No source names a fixed version.