🔒 Bump Go to 1.26.3 to fix 7 stdlib security vulnerabilities - #22
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The govulncheck security scanner started rattling chains — seven CVEs haunting the codebase, all lurking inside go1.26.0's standard library. The specters: - GO-2026-4982 & GO-2026-4980: XSS in html/template (escaper/meta URL bypasses) - GO-2026-4947 & GO-2026-4946: DoS in crypto/x509 (cert chain work, policy validation) - GO-2026-4870: DoS in crypto/tls (unauthenticated TLS 1.3 KeyUpdate connection retention) - GO-2026-4918: HTTP/2 infinite loop in net/http on bad SETTINGS_MAX_FRAME_SIZE - GO-2026-4971: Panic in net.Dial on Windows NUL byte input One bump to go1.26.3 in go.mod sends them all back to whatever dimension they crawled out of. All workflows use go-version-file: go.mod so they automatically pick up the fix.
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Summary
godirective ingo.modfrom1.26.0→1.26.3html/templatehtml/templatecrypto/x509crypto/x509crypto/tlsnet/httpSETTINGS_MAX_FRAME_SIZEnetnet.Dial/LookupPorton NUL byte input (Windows)All workflows use
go-version-file: go.modso they automatically pick up the new version.The Trivy filesystem scan was already clean — no third-party dependency CVEs.
Test plan