CVE-2024-23832

Name: CVE-2024-23832
Creator: NVD / NIST
Published: 2024-02-01T17:15:10.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2024-23832 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account. Every Mastodon version prior to 3.5.17 is vulnerable, as well as 4.0.x versions prior to 4.0.13, 4.1.x version prior to 4.1.13, and 4.2.x versions prior to 4.2.5.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.93%

77.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-290

Affected Software

Vendor	Product	Versions
Joinmastodon	Mastodon	< 3.5.17
Joinmastodon	Mastodon	>= 4.0.0, < 4.0.13
Joinmastodon	Mastodon	>= 4.1.0, < 4.1.13
Joinmastodon	Mastodon	>= 4.2.0, < 4.2.5

References

http://www.openwall.com/lists/oss-security/2024/02/02/4Mailing List, Patch
https://github.com/mastodon/mastodon/commit/1726085db5cd73dd30953da858f9887bcc90b958Patch
https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rwVendor Advisory
http://www.openwall.com/lists/oss-security/2024/02/02/4Mailing List, Patch
https://github.com/mastodon/mastodon/commit/1726085db5cd73dd30953da858f9887bcc90b958Patch
https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rwVendor Advisory

Timeline

Published: Feb 1, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-23832?

How severe is CVE-2024-23832?

CVE-2024-23832 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2024-23832?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-23832?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST