CVE-2026-23991— go-tuf affected by client DoS via malformed server response
Quick assessment
Affected
theupdateframework go-tuf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
go-tuf是The Update Framework开源的一个用于保护软件更新系统的框架。 go-tuf 2.0.0版本至2.3.1之前版本存在代码问题漏洞，该漏洞源于解析无效TUF元数据JSON时发生内核崩溃，可能导致拒绝服务。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-23991
Vulnerability Information
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Vulnerability Title
go-tuf affected by client DoS via malformed server response
Source: CVE Program / CVE List V5
Vulnerability Description
go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, if the TUF repository (or any of its mirrors) returns invalid TUF metadata JSON (valid JSON but not well formed TUF metadata), the client will panic during parsing, causing a denial of service. The panic happens before any signature is validated. This means that a compromised repository/mirror/cache can DoS clients without having access to any signing key. Version 2.3.1 fixes the issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
go-tuf 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-tuf是The Update Framework开源的一个用于保护软件更新系统的框架。 go-tuf 2.0.0版本至2.3.1之前版本存在代码问题漏洞，该漏洞源于解析无效TUF元数据JSON时发生内核崩溃，可能导致拒绝服务。
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 |
|---|---|---|---|---|
| theupdateframework | go-tuf | >= 2.0.0, < 2.3.1 | - |
|
II. Public POCs for CVE-2026-23991
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-23991 (1)
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V. Comments for CVE-2026-23991
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