CVE-2025-54320

4.3 mediumEPSS 0.4%

Medium (4.3) in ascertia signinghub. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
CWE: CWE-770
Published: 2025-11-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ascertia:signinghub

References

https://github.com/saykino/CVE-2025-54320
https://www.ascertia.com/company/vulnerability-disclosure-policy/

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