CVE-2021-43841

Name: CVE-2021-43841
Creator: NVD / NIST
Published: 2022-02-04T23:15:11.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2021-43841 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. XWiki is a generic wiki platform offering runtime services for applications built on top of it. When using default XWiki configuration, it's possible for an attacker to upload an SVG containing a script executed when executing the download action on the file. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

XWiki is a generic wiki platform offering runtime services for applications built on top of it. When using default XWiki configuration, it's possible for an attacker to upload an SVG containing a script executed when executing the download action on the file. This problem has been patched so that the default configuration doesn't allow to display the SVG files in the browser. Users are advised to update or to disallow uploads of SVG files.

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

0.86%

53.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Xwiki	Xwiki	>= 1.0, < 12.10.6
Xwiki	Xwiki	>= 13.0, <= 13.2

References

https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62Patch, Third Party Advisory
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9jq9-c2cv-pcrjThird Party Advisory
https://jira.xwiki.org/browse/XWIKI-18368Exploit, Patch, Vendor Advisory
https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownloadVendor Advisory
https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62Patch, Third Party Advisory
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9jq9-c2cv-pcrjThird Party Advisory
https://jira.xwiki.org/browse/XWIKI-18368Exploit, Patch, Vendor Advisory
https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownloadVendor Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43841?

How severe is CVE-2021-43841?

CVE-2021-43841 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43841?

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-2021-43841?

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

Scan your code now

Source: NVD / NIST