What is CVE-2025-49149?

CVE-2025-49149 is a medium-severity vulnerability in Langgenius Dify, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-06-17.

How severe is CVE-2025-49149?

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

XSS in Langgenius Dify

CVE-2025-49149

Dify is an open-source LLM app development platform. In version 1.2.0, there is insufficient filtering of user input by web applications. Attackers can use website vulnerabilities to inject malicious script code into web pages. This may result in a cross-site scripting (XSS) attack when a user browses these web pages. At time of posting, there is no known patched version.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (15.1th percentile) — read the EPSS interpretation.

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.

Affected products

Langgenius Dify — versions = 1.2.0, 1.2.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-49149?: CVE-2025-49149 is a medium-severity vulnerability in Langgenius Dify, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-06-17.
How severe is CVE-2025-49149?: Medium severity. CVSS v3 base score is 6.1 out of 10.