[cherry-pick: release-v0.81.x] Security: Update Go stdlib to 1.26.6 (net/url, html/template, crypto/tls, net/http, encoding/xml, encoding/asn1) - #3955
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tekton-robot merged 1 commit intoAug 20, 2026
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Update go directive from 1.26.5 to 1.26.6 to address multiple reachable stdlib vulnerabilities confirmed by govulncheck: - GO-2026-6218: quadratic complexity in net/url.resolvePath - GO-2026-6091: JS regexp context tracking in html/template - GO-2026-6090: TLS post-handshake message limits in crypto/tls - GO-2026-6089: ReadHeaderTimeout in HTTP/2 check in net/http - GO-2026-6088: XML recursion depth guard in encoding/xml - GO-2026-5972: ASN.1 recursion depth guard in encoding/asn1 - GO-2026-5026: net/http header handling All unit tests pass with GOTOOLCHAIN=go1.26.6. Resolves: SRVKP-13173, SRVKP-13178, SRVKP-13179 Co-Assisted-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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This is a cherry-pick of #3926
Changes
Update Go stdlib from 1.26.5 to 1.26.6 to remediate multiple reachable stdlib vulnerabilities on release-v0.80.x, confirmed present and reachable by govulncheck.
Vulnerabilities fixed:
govulncheck result after fix: no fixable stdlib CVEs remain.
Jira tickets: SRVKP-13173, SRVKP-13178, SRVKP-13179
Submitter Checklist
make test lintbefore submitting a PRRelease Notes