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Unrated severityNVD Advisory· Published Sep 19, 2023· Updated Jun 18, 2025

Mastodon Server-Side Request Forgery vulnerability

CVE-2023-42450

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Mastodon/Mastodonllm-fuzzy2 versions
    >= 4.2.0-beta1 < 4.2.0-rc2+ 1 more
    • (no CPE)range: >= 4.2.0-beta1 < 4.2.0-rc2
    • (no CPE)range: >= 4.2.0-beta1, < 4.2.0-rc2
  • osv-coords
    pkg:bitnami/mastodon
    Range: >= 4.2.0-beta1, < 4.2.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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