CVE-2025-54320

MediumCVSS 4.3

Published: 18/11/2025(UTC)Updated: 05/11/2026(UTC)Translated: 05/11/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.35%

29th percentile - higher than 29% of all known CVEs

Summary

In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the invite user function, leading to an email bombing vulnerability. An authenticated attacker can exploit this by automating invite requests.

Risk Assessment

This can overwhelm email servers and inboxes, causing communication disruptions and potential reputational damage.

Recommendation

Implement rate limiting on the invite function or update to a patched version.

Other vulnerabilities in Ascertia SigningHub

CVE-2025-54321Critical
In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an email bombing vulnerability. An authenticated attacker can exploit this by automating reset password requests.

Original NVD description (English source)

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