CVE-2024-24823

What it is

Graylog is a free and open log management platform. Starting in version 4.3.0 and prior to versions 5.1.11 and 5.2.4, reauthenticating with an existing session cookie would re-use that session id, even if for different user credentials. In this case, the pre-existing session could be used to gain elevated access to an existing Graylog login session, provided the malicious user could successfully inject their session cookie into someone else's browser. The complexity of such an attack is high, because it requires presenting a spoofed login screen and injection of a session cookie into an existing browser, potentially through a cross-site scripting attack. No such attack has been discovered. Graylog 5.1.11 and 5.2.4, and any versions of the 6.0 development branch, contain patches to not re-use sessions under any circumstances. Some workarounds are available. Using short session expiration and explicit log outs of unused sessions can help limiting the attack vector. Unpatched this vulnerability exists, but is relatively hard to exploit. A proxy could be leveraged to clear the `authentication` cookie for the Graylog server URL for the `/api/system/sessions` endpoint, as that is the only one vulnerable.

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. High risk of data exposure, data tampering.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2024-02-07 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 07:14 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 5.7 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2024-02-07 18:15 UTC

Last modified

2026-06-17 07:14 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-384

Record status

Modified

Affected

• Graylog < 5.1.11
• Graylog < 5.2.4

Attack profile CVSS 3.1 · 5.7

Attack vector

Network

Complexity

High

Privileges needed

High

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2024-24823.md and follow it. Check whether this project is affected by CVE-2024-24823. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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