What is CVE-2022-27166?

CVE-2022-27166 is a medium-severity vulnerability in Apache Jspwiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-08-04.

How severe is CVE-2022-27166?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2022-27166 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Apache Jspwiki

CVE-2022-27166

A carefully crafted request on XHRHtml2Markup.jsp could trigger an XSS vulnerability on Apache JSPWiki up to and including 2.11.2, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-08-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.862 (99.7th percentile), scored 2026-10-29.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.858 · newest: 0.862 · change: +0.004

Affected products

Apache Jspwiki
Apache Software Foundation Jspwiki — versions Apache JSPWiki

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

jspwiki-wiki.apache.org/Wiki.jsp (Vendor Advisory)

Frequently asked questions

What is CVE-2022-27166?: CVE-2022-27166 is a medium-severity vulnerability in Apache Jspwiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-08-04.
How severe is CVE-2022-27166?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2022-27166 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.