CVE-2024-56311Public exploitNetwork attack vector

Session termination via unprotected logout request

Published Dec 22, 2024 · Updated Mar 13, 2025

Cross-site request forgery in REDCap 14.9.6 and earlier allows remote attackers to terminate user sessions through calendar event notes. The Notes field accepts attacker-supplied HTML that issues a logout request, while the logout function lacks a CSRF token or equivalent origin check. A user must view the crafted calendar event; successful exploitation logs that user out, with no independently documented data access or modification.

CVSS severity8.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in REDCap 14.9.6 and earlier allows remote attackers to terminate user sessions through calendar event notes. The Notes field accepts attacker-supplied HTML that issues a logout request, while the logout function lacks a CSRF token or equivalent origin check. A user must view the crafted calendar event; successful exploitation logs that user out, with no independently documented data access or modification.

The record

CVE
CVE-2024-56311
Published
Dec 22, 2024
Updated
Mar 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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