CVE-2026-23964

Katalog CVE

CVSS 5.4 · Medium EPSS 0,23%

Kerentanan Incorrect Authorization pada joinmastodon mastodon. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.5.5, 4.4.12, and 4.3.18, an insecure direct object reference in the web push subscription update endpoint lets any authenticated user update another user's push subscription by guessing or obtaining the numeric subscription id. This can be used to disrupt push notifications for other users and also leaks the web push subscription endpoint. Any user with a web push subscription is impacted, because another authenticated user can tamper with their push subscription settings if they can guess or obtain the subscription id. This allows an attacker to disrupt push notifications by changing the policy (whether to filter notifications from non-followers or non-followed users) and subscribed notification types of their victims. Additionally, the endpoint returns the subscription object, which includes the push notification endpoint for this subscription, but not its keypair. 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

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

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization
CWE-639: Authorization Bypass Through User-Controlled Key

EPSS (30 hari)

0,23% peluang dieksploitasi; lebih tinggi dari 12,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/mastodon/mastodon/security/advisories/GHSA-f3q8-7vw3-69v4 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