What is CVE-2022-23515?

CVE-2022-23515 is a medium-severity vulnerability in Flavorjones Loofah, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-12-14.

How severe is CVE-2022-23515?

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

XSS in Flavorjones Loofah

CVE-2022-23515

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml media type in data URIs. This issue is patched in version 2.19.1.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-12-14 · 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: 0.008 (55.8th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Flavorjones Loofah — versions >= 2.1.0, < 2.19.1
Loofah Project
Debian Linux — versions 10.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/flavorjones/loofah/security/advisories/GHSA-228g-948r-83gx (Third Party Advisory)
github.com/flavorjones/loofah/issues/101 (Third Party Advisory, Issue Tracking)
hackerone.com/reports/1694173 (Permissions Required, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/09/msg00011.html (Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2022-23515?: CVE-2022-23515 is a medium-severity vulnerability in Flavorjones Loofah, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-12-14.
How severe is CVE-2022-23515?: Medium severity. CVSS v3 base score is 6.1 out of 10.