XSS in Requarks Wiki
CVE-2021-43856
Wiki.js is a wiki app built on Node.js. Wiki.js 2.5.263 and earlier is vulnerable to stored cross-site scripting through non-image file uploads for file types that can be viewed directly inline in the browser. By creating a malicious file…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (62.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.
Affected products
- Requarks Wiki — versions < 2.5.264
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/Requarks/wiki/security/advisories/GHSA-rhpf-929m-7fm2 (x_refsource_CONFIRM)
- github.com/Requarks/wiki/commit/79bdd4409316adf649806de3e22352297f85cee0 (x_refsource_MISC)
- github.com/Requarks/wiki/releases/tag/2.5.264 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43856?
- CVE-2021-43856 is a high-severity vulnerability in Requarks Wiki, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2021-12-27.
- How severe is CVE-2021-43856?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2021-43856 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.