CVE-2026-28432— HTTP signature verification can be bypassed
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I. Basic Information for CVE-2026-28432
Vulnerability Information
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Vulnerability Title
HTTP signature verification can be bypassed
Source: NVD (National Vulnerability Database)
Vulnerability Description
Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled or disabled. This vulnerability is fixed in 2026.3.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Misskey 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misskey是Misskey开源的一个永久免费的开源联合社交媒体平台。 Misskey 2026.3.1之前版本存在数据伪造问题漏洞，该漏洞源于允许绕过HTTP签名验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| misskey-dev | misskey | < 2026.3.1 | - |
II. Public POCs for CVE-2026-28432
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · misskey-dev · 2026-03-09 · 3 CVEs total
| CVE-2026-28431 | Misskey lacks proper authorization checks and input validation | |
| CVE-2026-28433 | Misskey lacks resource ownership validation |
IV. Related Vulnerabilities
Same product: misskey
- CVE-2026-28433
Misskey lacks resource ownership validation - CVE-2026-28431
Misskey lacks proper authorization checks and input validati - CVE-2025-66482
Misskey has a login rate limit bypass via spoofed X-Forwarde - CVE-2025-66402
misskey.js's export data contains private post data - CVE-2025-46559
Misskey Directory Traversal Vulnerability in AiScript via `M
Same vendor: misskey-dev
- CVE-2026-28433
Misskey lacks resource ownership validation - CVE-2026-28431
Misskey lacks proper authorization checks and input validati - CVE-2025-66482
Misskey has a login rate limit bypass via spoofed X-Forwarde - CVE-2025-66402
misskey.js's export data contains private post data - CVE-2025-46559
Misskey Directory Traversal Vulnerability in AiScript via `M
Same weakness: CWE-347
- CVE-2026-42193
Plunk: SNS webhook forgery - CVE-2026-44497
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type - CVE-2026-41669
Admidio: SAML Signature Validation Result Ignored — Forged A - CVE-2026-7689
Dolibarr ERP CRM Online Signature security.lib.php dol_verif - CVE-2026-33467
Improper Verification of Cryptographic Signature in Elastic
V. Comments for CVE-2026-28432
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