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CVE-2023-33962

20
FAUCET Score

CVE-2023-33962 is a cross-site scripting (XSS) vulnerability affecting JStachio, a Java Mustache templating engine, prior to version 1.0.1. The vulnerability stems from improper escaping of single quotes in HTML, allowing attackers to inject malicious JavaScript. Rated Medium severity (CVSS 6.1), it requires user interaction and can lead to session hijacking or data theft. There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:jstachio_project:jstachio:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 47th 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
mavenpatch availablevia ghsa
Product: io.jstach:jstachioFixed in: 1.0.1

Vendor Advisories (1)

mavenGHSA-gwxv-jv83-6qjrmedium

JStachio XSS vulnerability: Unescaped single quotes

Jun 6, 2023

References

github.com / jstachio/jstachio/commit/7b2f78377d1284df14c580be762a25af5f8dcd66
Patch
github.com / jstachio/jstachio/issues/157
Issue TrackingPatch
github.com / jstachio/jstachio/pull/158
Patch
github.com / jstachio/jstachio/releases/tag/v1.0.1
Release Notes
github.com / jstachio/jstachio/security/advisories/GHSA-gwxv-jv83-6qjr
ExploitVendor Advisory