PT-2025-42643 · Unknown · Signinghub

Published 2025-10-17 · Updated 2025-10-27 · CVE-2025-56221

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions SigningHub version 8.6.8

Description A missing rate limit in the login process enables attackers to circumvent authentication through brute-force attempts. The issue affects the login mechanism and could allow unauthorized access.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

CVE-2025-56221

Affected Products

Signinghub

References · 8

• 🔥 https://github.com/saykino/CVE-2025-56221 · Exploit
• https://osv.dev/vulnerability/CVE-2025-56221 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-56221 · Security Note
• https://twitter.com/cracbot/status/1980952337905762336 · Twitter Post
• https://twitter.com/CVEnew/status/1979289042626703520 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1979317723185217723 · Twitter Post
• https://t.me/CVEtracker/35211 · Telegram Post
• https://t.me/cveNotify/140472 · Telegram Post