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)
Published · last modified .
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: 0.003 (18.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.7% 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: 0.003 · change: +0.000
Affected products
- Langgenius Dify — versions = 1.2.0, 1.2.0
Weakness classification (CWE)
References
- github.com/langgenius/dify/security/advisories/GHSA-grmh-ww4v-5cgj (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.