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.
CVE-2025-54320
CVSS base score
4.3 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-770
Last modified
November 5, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected products
ascertia signinghub
References
- github.com Third Party Advisory
- www.ascertia.com Vendor Advisory