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CVE-2023-36823

19
FAUCET Score

CVE-2023-36823 is a cross-site scripting (XSS) vulnerability affecting Sanitize versions 3.0.0 through 6.0.1, specifically when configured with the "relaxed" setting or custom configurations allowing style elements and CSS at-rules. An attacker can craft malicious HTML and CSS to bypass the sanitizer, leading to XSS or other undesired browser behavior. This medium-severity vulnerability (CVSS 6.1) requires user interaction and has a network attack vector with low attack complexity, potentially impacting confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 6.0.2CPE matchmatch criteria
cpe:2.3:a:sanitize_project:sanitize:*:*:*:*:*:ruby:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 56th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: sanitizeFixed in: 6.0.2

Vendor Advisories (1)

rubygemsGHSA-f5ww-cq3m-q3g7high

Sanitize vulnerable to Cross-site Scripting via insufficient neutralization of `style` element content

Jul 6, 2023

References

github.com / rgrove/sanitize/commit/76ed46e6dc70820f38efe27de8dabd54dddb5220
Patch
github.com / rgrove/sanitize/releases/tag/v6.0.2
Release Notes
github.com / rgrove/sanitize/security/advisories/GHSA-f5ww-cq3m-q3g7
Vendor Advisory
lists.debian.org / debian-lts-announce/2023/11/msg00008.html
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