CVE-2025-49149Public exploitNetwork attack vector

Client-side script execution via unsanitized input

Published Jun 17, 2025 · Updated Jun 18, 2025

Cross-site scripting in LangGenius Dify 1.2.0 allows remote attackers to execute script in another user's browser via crafted input. The affected input box accepts insufficiently filtered markup and renders a javascript: link as active page content in choreography and Q&A views. Exploitation requires another user to browse the page; demonstrated effects include script execution and an attacker-controlled overlay link.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in LangGenius Dify 1.2.0 allows remote attackers to execute script in another user's browser via crafted input. The affected input box accepts insufficiently filtered markup and renders a javascript: link as active page content in choreography and Q&A views. Exploitation requires another user to browse the page; demonstrated effects include script execution and an attacker-controlled overlay link.

The record

CVE
CVE-2025-49149
Published
Jun 17, 2025
Updated
Jun 18, 2025
Vendor
LangGenius
Product
Dify
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 1.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LangGenius · Difyversion== 1.2.0

Published CVSS scores

5.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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