CVE-2026-22246

Katalog CVE

CVSS 4.3 · Medium EPSS 0,27%

Kerentanan Insertion of Sensitive Information Into Sent Data pada joinmastodon mastodon. Skor CVSS 3.1 4.3 (Medium) menurut NVD.

Deskripsi (NVD)

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon 4.3 added notifications of severed relationships, allowing end-users to inspect the relationships they lost as the result of a moderation action. The code allowing users to download lists of severed relationships for a particular event fails to check the owner of the list before returning the lost relationships. Any registered local user can access the list of lost followers and followed users caused by any severance event, and go through all severance events this way. The leaked information does not include the name of the account which has lost follows and followers. This has been fixed in Mastodon v4.3.17, v4.4.11 and v4.5.4.

Rincian

Terbit di NVD

8 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

4.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-201: Insertion of Sensitive Information Into Sent Data

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 17,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/mastodon/mastodon/commit/68e30985ca7afdb89af1b2e9dc962e1993dc8076 patch
• https://github.com/mastodon/mastodon/commit/b2bcd34486fd6681cc0f30028086ef0f47282adf patch
• https://github.com/mastodon/mastodon/commit/c1fb6893c5175d74c074f6f786d504c8bc610d57 patch
• https://github.com/mastodon/mastodon/security/advisories/GHSA-ww85-x9cp-5v24 advisory pihak ketiga