What’s Vulnerable › Vulnerabilities

CVE-2025-69206: Hemmelig has SSRF Filter bypass in Secret Request functionality

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-29 · updated 2026-10-07
• Weakness: CWE-918

Description

Hemmelig is a messing app with with client-side encryption and self-destructing messages. Prior to version 7.3.3, a Server-Side Request Forgery (SSRF) filter bypass vulnerability exists in the webhook URL validation of the Secret Requests feature. The application attempts to block internal/private IP addresses but can be bypassed using DNS rebinding or open redirect services. This allows an authenticated user to make the server initiate HTTP requests to internal network resources. Version 7.3.3 contains a patch for the issue.

Affected products

• HemmeligOrg Hemmelig.app: before 7.3.3 — fixed in 7.3.3

How to fix

Upgrade to a fixed version: HemmeligOrg Hemmelig.app 7.3.3. Check the vendor advisory for mitigations.

References

• https://github.com/HemmeligOrg/Hemmelig.app/commit/6c909e571d0797ee3bbd2c72e4eb767b57378228
• https://github.com/HemmeligOrg/Hemmelig.app/security/advisories/GHSA-vvxf-wj5w-6gj5
• https://github.com/HemmeligOrg/Hemmelig.app/security/advisories/GHSA-vvxf-wj5w-6gj5

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