CVE-2021-24540
Wonder Video Embed < 1.8 - Contributor+ Stored XSS
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its wonderplugin_video shortcode, which could allow users with a role as low as Contributor to perform Stored XSS attacks.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its wonderplugin_video shortcode, which could allow users with a role as low as Contributor to perform Stored XSS attacks.
- Record
CVE-2021-24540- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Wonder Video Embed < 1.8 - Contributor+ Stored XSS
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its wonderplugin_video shortcode, which could allow users with a role as low as Contributor to perform Stored XSS attacks.
- Record
CVE-2021-24540- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-11452 No score
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its wonderplugin_video shortcode, which could allow users with a role as low as Contributor to perform Stored XSS attacks.
- Record
EUVD-2021-11452- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vmj7-5m4c-5xj8 No score
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its...
The Wonder Video Embed WordPress plugin before 1.8 does not escape parameters of its wonderplugin_video shortcode, which could allow users with a role as low as Contributor to perform Stored XSS attacks.
- Record
GHSA-vmj7-5m4c-5xj8- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24540 is a medium vulnerability (CVSS 5.4) in Unknown Wonder Video Embed, published August 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. No source names a fixed version.