Skip to content
KitploitKITPLOIT
ToolsBlog
Submit
ToolsBlog
Submit

Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

··Feeds·Contact·Privacy·© 2026 Kitploit

Tool Directory

Categories

View all categories
Loading categories
CVE-2025-54320 — Proof-of-concept for CVE-2025-54320: an email bombing vulnerability in Ascertia SigningHub's Invite User API due to missing rate limiting, allowing authenticated remote attackers to flood target inboxes. | Kitploit
Tools/GitHubGitHub/saykino/cve-2025-54320
Vulnerability AnalysisWeb SecurityMisconfigurationAPI SecurityEmail Security
GitHubsaykino/cve-2025-54320

CVE-2025-54320

Proof-of-concept for CVE-2025-54320: an email bombing vulnerability in Ascertia SigningHub's Invite User API due to missing rate limiting, allowing authenticated remote attackers to flood target inboxes.

View Repository
59 months agoNot yet reviewed

Most Popular

View all →

Discover the most used tools by our community.

Explore all tools

Browse our collection of tools

View all tools →
Share

CVE-2025-54320 Invite User Email Bombing

Description

The invitation API does not implement rate limiting for the target email address. This allows for an Email Bombing attack.

CVSS Score: 7.1 (High)

Attack Type

  • Remote (Authenticated)

Affected Versions

  • Versions before <= 8.6.8

Vendor of Product

  • Ascertia

Affected Product Code Base

  • SigningHub

Affected Component

  • Invite User API.

Mitigations

  • Implement rate-limit for the Invite User API.

Vulnerability Details

  • an attacker can floods a target's inbox with a large volume of invite emails in a short period of time.

Fixed versions

  • Versions after > 8.6.8

Discovered By:

  • Yazan Abu-Nadi
Download Tool