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VulnerabilityPublished

CVE-2025-54321: In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password

Source GCVE Database

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Authoritative record:CVE-2025-54321· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical : upgrade to 8.6.9 as a priority.

Data as of 13 Nov 2026, 20:36 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.19.8
Patch
Available – fixed in 8.6.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade saykino/CVE-2025-54321 to 8.6.9.

Affected software

ProductAffectedFixed in
GitHubsaykino/CVE-2025-54321pkg:github/saykino/CVE-2025-54321Other threatsAffected
  • <8.6.9
Fixed in
  • 8.6.9

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

In the meantime, consider implementing external rate limiting or email throttling controls at the network or mail server level to mitigate potential abuse. Since the vulnerability requires authentication, review and restrict access to the reset password functionality where possible.

Description

Ascertia SigningHub versions through 8.6.8 have a vulnerability due to lack of rate limiting on the password reset function. This flaw allows an authenticated attacker to automate reset password requests, resulting in an email bombing attack. The vulnerability has a critical severity rating with a CVSS score of 9.8.

References

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