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CVE-2025-51846

Xwiki Cryptpad denial of service

7.5 HIGHPublic exploitEPSS 0.58%
  1. Published30 Apr 2026

Description

CryptPad 2025.3.1 allows unbounded WebSocket frame flood. A remote, unauthenticated attacker can significantly degrade or deny service for all users of a CryptPad instance. Fixed in 2026.2.2.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Xwiki Cryptpad≥ 2025.3.1 < 2026.2.2

Remediation

Fixed in
Xwiki Cryptpad≥ 2026.2.2

References

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Frequently asked

Is CVE-2025-51846 being actively exploited?

CVE-2025-51846 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.58%.

How severe is CVE-2025-51846?

CVE-2025-51846 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.58% probability of exploitation.

Which products are affected by CVE-2025-51846?

Affected products include Xwiki Cryptpad.

How do I fix CVE-2025-51846?

Upgrade affected software to a fixed version, for example Xwiki Cryptpad 2026.2.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-51846 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.