CVE Catalog

CVE-2025-69206

MediumCVSS 4.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

9th percentile - higher than 9% of all known CVEs

Summary

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.

Risk Assessment

An attacker with a valid account can use the server to scan and access internal network resources, potentially leading to data leakage or further attack escalation. The vulnerability allows bypassing network security controls and accessing internal systems.

Recommendation

Update Hemmelig to version 7.3.3 or later. Additionally, consider restricting outbound traffic from the server and implementing additional URL validation mechanisms.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS