CVE-2023-42450 (GCVE-0-2023-42450)
Vulnerability from cvelistv5
Published
2023-09-19 15:53
Modified
2025-06-18 14:28
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
  • CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
Summary
Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused deputy attacks if the server configuration includes `ALLOWED_PRIVATE_ADDRESSES` to allow access to local exploitable services. Version 4.2.0-rc2 has a patch for the issue.
References
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/94893cf24fc95b32cc7a756262acbe008c20a9d2Patch
security-advisories@github.comhttps://github.com/mastodon/mastodon/security/advisories/GHSA-hcqf-fw2r-52g4Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/mastodon/mastodon/commit/94893cf24fc95b32cc7a756262acbe008c20a9d2Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/mastodon/mastodon/security/advisories/GHSA-hcqf-fw2r-52g4Vendor Advisory
Impacted products
Vendor Product Version
mastodon mastodon Version: >= 4.2.0-beta1, < 4.2.0-rc2
 Create a notification for this product.
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