CVE-2025-54320: In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the invite user function, leading to an…
CVE-2025-54320 · Severity: medium · CVSS 4.3 · Published 2025-11-18
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-54320 being exploited in the wild.
How severe is CVE-2025-54320?
Medium severity, with a CVSS score of 4.3, published 18 November 2025.
Which products and versions are affected?
Ascertia Signinghub. The advisory does not name versions.
Is there a fix for CVE-2025-54320?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-54320?
Check whether you run Ascertia Signinghub. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.