Vulnerability in github.com/theupdateframework/go-tuf/v2 (CVE-2026-23991)
Summary
Vulnerability in github.com/theupdateframework/go-tuf/v2 (CVE-2026-23991). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.3.1 or later.
Original description
The description as published by the source.
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: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A weakness called CVE-2026-23991 was discovered in github.com/theupdateframework/go-tuf/v2.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "github.com/theupdateframework/go-tuf/v2 CVE-2026-23991".
CVE-2026-23991 (github.com/theupdateframework/go-tuf/v2). Severity: Info.
Response plan:
- Check the vendor advisory for affected versions and the patched release.
- If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
- If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
- Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
A weakness (CVE-2026-23991) in github.com/theupdateframework/go-tuf/v2. A serious software flaw has been identified.
Target versions of github.com/theupdateframework/go-tuf/v2 (see vendor advisory). If running in production, identify exposure immediately.
Severity: Info. Low severity or not yet rated.
Update to the patched release as listed in the vendor advisory.
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- BellSoft Alpaquita BELL-CVE-2026-23991 docker-cli-buildx Fixed in: 0.32.0-r0
- Debian DEBIAN-CVE-2026-23991 golang-github-theupdateframework-go-tuf
- Ubuntu UBUNTU-CVE-2026-23991 golang-github-theupdateframework-go-tuf
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- web github.com