Auth bypass in Joinmastodon Mastodon
CVE-2024-37903
Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodo…
Vulnerability class: Broken Access Control
EPSS: 0.005 (41.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Joinmastodon Mastodon
- Mastodon — versions >= 2.6.0, < 4.1.18, >= 4.2.0, < 4.2.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2024-37903?
- CVE-2024-37903 is a high-severity vulnerability in Joinmastodon Mastodon, classified under Missing Authorization. CVSS score: 8.2/10. Published 2024-07-05.
- How severe is CVE-2024-37903?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2024-37903 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.