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CVE-2021-24134

MEDIUMCVSS 4.8/10EPSS 0.65%

Last modified

CVE-2021-24134 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Unvalidated input and lack of output encoding in the Constant Contact Forms WordPress plugin, versions before 1.8.8, lead to multiple Stored Cross-Site Scripting vulnerabilities, which allowed high-privileged user (Editor+) to inject arbitrary JavaScript code or HTML in posts where the malicious form is embed.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Unvalidated input and lack of output encoding in the Constant Contact Forms WordPress plugin, versions before 1.8.8, lead to multiple Stored Cross-Site Scripting vulnerabilities, which allowed high-privileged user (Editor+) to inject arbitrary JavaScript code or HTML in posts where the malicious form is embed.

Metrics

CVSS 3.1
4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
0.65%

46.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ConstantcontactConstant Contact Forms< 1.8.8

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-24134?
Unvalidated input and lack of output encoding in the Constant Contact Forms WordPress plugin, versions before 1.8.8, lead to multiple Stored Cross-Site Scripting vulnerabilities, which allowed high-privileged user (Editor+) to inject arbitrary JavaScript code or HTML in posts where the malicious form is embed.
How severe is CVE-2021-24134?
CVE-2021-24134 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.
How do I fix CVE-2021-24134?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24134?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST