CVE-2026-23961

Katalog CVE

CVSS 5.3 · Medium EPSS 0,45%

Kerentanan Incorrect Authorization pada joinmastodon mastodon. Skor CVSS 3.1 5.3 (Medium) menurut github.com.

Deskripsi (NVD)

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon allows server administrators to suspend remote users to prevent interactions. However, some logic errors allow already-known posts from such suspended users to appear in timelines if boosted. Furthermore, under certain circumstances, previously-unknown posts from suspended users can be processed. This issue allows old posts from suspended users to occasionally end up on timelines on all Mastodon versions. Additionally, on Mastodon versions from v4.5.0 to v4.5.4, v4.4.5 to v4.4.11, v4.3.13 to v4.3.17, and v4.2.26 to v4.2.29, remote suspended users can partially bypass the suspension to get new posts in. Mastodon versions v4.5.5, v4.4.12, v4.3.18 are patched.

Rincian

Terbit di NVD

22 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,45% peluang dieksploitasi; lebih tinggi dari 37,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/mastodon/mastodon/security/advisories/GHSA-5h2f-wg8j-xqwp advisory vendor
• https://github.com/mastodon/mastodon/releases/tag/v4.3.18 release notes
• https://github.com/mastodon/mastodon/releases/tag/v4.4.12 release notes
• https://github.com/mastodon/mastodon/releases/tag/v4.5.5 release notes