CVE-2021-23260

Name: CVE-2021-23260
Creator: NVD / NIST
Published: 2021-12-02T16:15:07.563+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2021-23260 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Authenticated users with Site roles may inject XSS scripts via file names that will execute in the browser for this and other users of the same site.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

Authenticated users with Site roles may inject XSS scripts via file names that will execute in the browser for this and other users of the same site.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.43%

34.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Craftercms	Crafter Cms	>= 3.1.0, < 3.1.12

References

https://docs.craftercms.org/en/3.1/security/advisory.html#cv-2021120103Vendor Advisory
https://docs.craftercms.org/en/3.1/security/advisory.html#cv-2021120103Vendor Advisory

Timeline

Published: Dec 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23260?

Authenticated users with Site roles may inject XSS scripts via file names that will execute in the browser for this and other users of the same site.

How severe is CVE-2021-23260?

CVE-2021-23260 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23260?

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-2021-23260?

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

Scan your code now

Source: NVD / NIST