Nixpkgs security tracker

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Permalink CVE-2026-48028

6.5 MEDIUM

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): Low (L)
Privileges Required (PR): None (N)
User Interaction (UI): None (N)
Scope (S): Unchanged (U)
Confidentiality (C): None (N)
Integrity (I): Low (L)
Availability (A): Low (L)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): Low (L)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): None (N)
Modified Confidentiality (MC): None (N)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): Low (L)
Modified Availability (MA): Low (L)

updated 3 weeks, 6 days ago by @erictapen Activity log

Created suggestion 1 month ago
@erictapen ignored
7 packages
- bitlbee-mastodon
- mastodon-archive
- python312Packages.mastodon-py
- python313Packages.mastodon-py
- python314Packages.mastodon-py
- home-assistant-component-tests.mastodon
- wordpressPackages.plugins.simple-mastodon-verification
3 weeks, 6 days ago
@erictapen dismissed 3 weeks, 6 days ago

Mastodon: Removal of integrity-protected JSON entries from signed activities

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, Mastodon's normalization of incoming activities signed with Linked-Data Signatures does not sufficiently protect the activities from a certain class of spoofing, allowing threat actors to remove JSON entries from valid signed activities from a third-party actor. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.