This release includes 2 security fixes for security teams reviewing exposed deployments.
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Affected surfaces
ReleasePort's take
Light signalqwexvf/aegis-cli v0.17.1 upgrades the Go toolchain to 1.26.3, patching CVE-2026-4918 and CVE-2026-4971. It also adds retract detection for CapVersionUnpublished.
Why it matters: Patch to v0.17.1 to fix CVE-2026-4918 and CVE-2026-4971 in Go stdlib. New retract detection helps identify unsupported versions in dependency chains.
Summary
AI summaryUpgrade Go toolchain to 1.26.3 fixes two stdlib CVEs and adds retract detection for CapVersionUnpublished.
Changes in this release
| Type | Severity | Summary | CVE |
|---|---|---|---|
| Security | Medium |
Upgrades Go toolchain to version 1.26.3, fixing CVE-2026-4918 and CVE-2026-4971. Upgrades Go toolchain to version 1.26.3, fixing CVE-2026-4918 and CVE-2026-4971. Source: llm_adapter@2026-05-21 Confidence: high |
— |
| Feature | Medium |
Adds Go `retract` detection: CapVersionUnpublished fires for versions listed in go.mod's retract section. Adds Go `retract` detection: CapVersionUnpublished fires for versions listed in go.mod's retract section. Source: llm_adapter@2026-05-21 Confidence: low |
— |
Full changelog
Security
Upgrade Go toolchain to 1.26.3 — fixes two stdlib CVEs:
- GO-2026-4918: Infinite loop in HTTP/2 transport when given bad
SETTINGS_MAX_FRAME_SIZE(net/http) - GO-2026-4971: Panic on NUL byte in
net.Dial/LookupPorton Windows (net)
govulncheck ./... reports no vulnerabilities on this release.
Also in this release
- Go
retractdetection —CapVersionUnpublishedfires when the installed version of a Go module appears in that module's ownretractlist ingo.mod. Requiresdep.Versionpropagation through the heuristics pipeline (all callers updated).
Security Fixes
- GO-2026-4918 — Infinite loop in HTTP/2 transport with bad SETTINGS_MAX_FRAME_SIZE (net/http)
- GO-2026-4971 — Panic on NUL byte in net.Dial / LookupPort on Windows (net)
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