CVE-2026-6619Network attack vector

Authenticated script execution via unsanitized image filename

Published Apr 20, 2026 · Updated Apr 20, 2026

Cross-site scripting in LangGenius Dify 1.13.0 through 1.13.3 allows remote authenticated users to execute browser script via a crafted filename. ImagePreview's openInNewTab function handles the attacker-controlled filename without neutralizing script content before opening the preview. Low-privileged access and a victim opening the preview are required, and the published assessment limits the consequence to content modification.

CVSS severity3.5
Low
EPSS probability0.21%
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 1.13.0 through 1.13.3 allows remote authenticated users to execute browser script via a crafted filename. ImagePreview's openInNewTab function handles the attacker-controlled filename without neutralizing script content before opening the preview. Low-privileged access and a victim opening the preview are required, and the published assessment limits the consequence to content modification.

The record

CVE
CVE-2026-6619
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
LangGenius
Product
Dify
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.13.0
  2. Affected versionversion=1.13.1
  3. Affected versionversion=1.13.2
  4. Affected versionversion=1.13.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LangGenius · Difyversion=1.13.0; version=1.13.1; version=1.13.2; version=1.13.3

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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