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Golang CVE-2026-23991

MEDIUM
Reachable Assertion (CWE-617)
2026-01-22 security-advisories@github.com GHSA-846p-jg2w-w324
5.9
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
Patch released
Feb 17, 2026 - 16:10 nvd
Patch available
CVE Published
Jan 22, 2026 - 03:15 nvd
MEDIUM 5.9

DescriptionNVD

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.

AnalysisAI

go-tuf is a Go implementation of The Update Framework (TUF). [CVSS 5.9 MEDIUM]

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RemediationAI

Within 30 days: Identify affected systems running version 2.0.0 and and apply vendor patches as part of regular patch cycle. Vendor patch is available.

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Vendor StatusVendor

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CVE-2026-23991 vulnerability details – vuln.today

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