CVE-2021-24670
CoolClock < 4.3.5 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24670 is a medium vulnerability (CVSS 5.4) in Status301 Coolclock, published September 27, 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.
- Severity
- 5.4 MediumCVSS 3.1, NVD
- Exploit chance
- 0.62%EPSS, 50th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low as Contributor toperform Stored Cross-Site Scripting 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
Affected products
What each source reports
NVD Score used
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low as Contributor toperform Stored Cross-Site Scripting attacks
- Record
CVE-2021-24670- 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 ListNo score
CoolClock < 4.3.5 - Contributor+ Stored Cross-Site Scripting
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low as Contributor toperform Stored Cross-Site Scripting attacks
- Record
CVE-2021-24670- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-11582No score
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low as Contributor toperform Stored Cross-Site Scripting attacks
- Record
EUVD-2021-11582- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vhj9-fvc5-h2xqNo score
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing...
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low as Contributor toperform Stored Cross-Site Scripting attacks
- Record
GHSA-vhj9-fvc5-h2xq- Weakness
- CWE-79
- Updated
- 2026-11-02
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.