[security] Go 1.26.2 and Go 1.25.9 are released

BlackTree keeps a versioned source snapshot and links it to relevant CVE reports. The publisher remains authoritative for product applicability, release details and installation guidance.

Read the official article ↗

Publishergroups.google.com

Article IDNo stable ID in source URL

Verified snapshot27 Sept 2026, 14:00 UTC

Linked CVEs10

Linked CVE reports

These are source relationships, not a claim that this article fixes every affected product or branch.

CVE-2026-32280Unexpected work during chain building in crypto/x509
CVE-2026-32283Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
CVE-2026-33810Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509
CVE-2026-27140Code execution vulnerability in SWIG code generation in cmd/go
CVE-2026-32282TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix
CVE-2026-32289JsBraceDepth Context Tracking Bugs (XSS) in html/template
CVE-2026-27144Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile
CVE-2026-27143Missing bound checks can lead to memory corruption in safe Go in cmd/compile
CVE-2026-32288Unbounded allocation for old GNU sparse in archive/tar
CVE-2026-32281Inefficient policy validation in crypto/x509

Source and provenance

Original title: [security] Go 1.26.2 and Go 1.25.9 are released. Captured 27 Sept 2026, 14:00 UTC. The stored article is used for enrichment and change detection; BlackTree does not republish the publisher's full text here.

Open the publisher's current version ↗