PT-2026-36127 · Cryptpad · Cryptpad

Published 2026-04-30 · Updated 2026-04-30 · CVE-2025-51846

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions CryptPad versions 2025.3.1 through 2026.2.1

Description A remote, unauthenticated attacker can perform an unbounded WebSocket frame flood, which can significantly degrade or deny service for all users of a CryptPad instance.

Recommendations Update to version 2026.2.2.

Exploit

Fix

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2025-51846

Affected Products

Cryptpad

References · 7

• 🔥 https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-51846 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-51846 · Security Note
• https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e · Note
• https://twitter.com/VulmonFeeds/status/2049964547130216559 · Twitter Post
• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json · Note
• https://twitter.com/CVEnew/status/2049913878180507718 · Twitter Post