CVE-2026-50128
Mastodon: Spoofing of attribution domains
5.3
MEDIUM
CVSS 3.1
EPSS 0.13%
描述
Mastodon is a free, open-source social network server based on ActivityPub. From 4.3.0 until 4.5.11 and 4.4.18, Mastodon has a feature to let websites credit authors of their articles. To prevent false attribution claims, Mastodon uses the attributionDomains JSON-LD term, however, an error in how it is defined makes Linked Data Signatures on the toot:attributionDomains property ineffective. An attacker can arbitrarily modify the attributionDomains value of a legitimately signed Update activity and bypass Mastodon’s signature verification. This vulnerability is fixed in 4.5.11 and 4.4.18.
如何修補 CVE-2026-50128
要修補 CVE-2026-50128,請將受影響套件升級到下列已修補版本。
- —升級至 4.4.18 或更新版本
CVE-2026-50128 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 4.3.0, < 4.4.18, >= 4.5.0, < 4.5.11
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |