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CVE-2026-32280 is a denial-of-service vulnerability in the Go standard library affecting the crypto/x509 and crypto/tls packages. During X.509 certificate chain building, the implementation does not correctly limit the amount of work performed when a large number of intermediate certificates are supplied through VerifyOptions.Intermediates. As a result, processing attacker-controlled or otherwise untrusted certificate chains can trigger excessive computational work and resource consumption. The issue affects both applications that directly use crypto/x509 and applications that rely on crypto/tls for TLS certificate processing.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
141 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability in Go related to certificate chain building affecting crypto/x509 and crypto/tls processing.
A denial-of-service vulnerability in Go related to certificate chain building in crypto/x509 and crypto/tls.
A Go denial-of-service vulnerability affecting certificate chain building in crypto/x509 and crypto/tls.
A Go denial of service vulnerability in certificate chain building.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.