XSS in Xwiki
CVE-2021-43841
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.009 (55.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Xwiki
- Xwiki Xwiki-platform — versions < 12.10.6, >= 13.0, < 13.3RC1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Exploit, Patch, x_refsource_MISC, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43841?
- CVE-2021-43841 is a medium-severity vulnerability in Xwiki, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-02-04.
- How severe is CVE-2021-43841?
- Medium severity. CVSS v3 base score is 5.4 out of 10.