What is CVE-2026-26023?

CVE-2026-26023 is a medium-severity vulnerability in Dify, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-11.

How severe is CVE-2026-26023?

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

XSS in Dify

CVE-2026-26023

Dify is an open-source LLM app development platform. Prior to 1.13.0, a cross site scripting vulnerability has been found in the web application chat frontend when using echarts. User or llm inputs containing echarts containing a specific javascript payload will be executed. This vulnerability is fixed in 1.13.0.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-02-11 · 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: 0.004 (26.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001

Affected products

Dify
Langgenius Dify — versions < 1.13.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/langgenius/dify/security/advisories/GHSA-qqjx-5h5w-x5vj (Exploit, Vendor Advisory)
github.com/langgenius/dify/commit/378a1d7d08bd0ac5c75eaadc075a0f35211fcb8e (Patch)
github.com/langgenius/dify/releases/tag/1.13.0 (Product, Release Notes)

Frequently asked questions

What is CVE-2026-26023?: CVE-2026-26023 is a medium-severity vulnerability in Dify, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-11.
How severe is CVE-2026-26023?: Medium severity. CVSS v3 base score is 6.1 out of 10.