XSS in Requarks Wiki
CVE-2021-43855
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 a SVG file upload made via a custom request with a fake MIME type. By creating a crafted SVG file, a malicious Wiki.js…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.009 (55.3th 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
- Requarks Wiki.js
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43855?
- CVE-2021-43855 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-2021-43855?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2021-43855 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.