What is CVE-2016-10893?

CVE-2016-10893 is a medium-severity vulnerability in Crayon Syntax Highlighter Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-20.

How severe is CVE-2016-10893?

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

Is CVE-2016-10893 known to be exploited?

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

XSS in Crayon Syntax Highlighter Project

CVE-2016-10893

The crayon-syntax-highlighter plugin before 2.8.4 for WordPress has multiple XSS issues via AJAX requests.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-08-20 · 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: 0.015 (73.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Crayon Syntax Highlighter Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

wordpress.org/plugins/crayon-syntax-highlighter/ (Release Notes)
github.com/aramk/crayon-syntax-highlighter/issues/347 (Patch, Issue Tracking)
github.com/aramk/crayon-syntax-highlighter/commit/7fdb2e6b4c65178b4ed01ff08a8a3… (Product)

Frequently asked questions

What is CVE-2016-10893?: CVE-2016-10893 is a medium-severity vulnerability in Crayon Syntax Highlighter Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-20.
How severe is CVE-2016-10893?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2016-10893 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.