v1.18.0
2026-06-26T08:52:23Z•4a48865e370246c2f1f672529167ff7be828dfcce7f6445793b05f6d9f239e27
What happened
Open Policy Agent release notes (v1.15.0 through v1.18.0 series). Key security-relevant items: v1.18.0 introduces a breaking change to the outbound User-Agent header to conform to RFC 9110 (old exact-match strings may be missed by server-side filters/WAFs). Several releases (v1.15.2, v1.16.2, v1.17.1) update the Go toolchain used to build OPA (to Go 1.26.x) to address multiple stdlib security vulnerabilities (referenced as GO-2026-5039 and GO-2026-5037). Other notable changes: container-aware resource limits (automatic GOMAXPROCS restored, GOMEMLIMIT supported), new built-ins (uri.parse, uri.{
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- open_policy_agent_opa_releases
- Record identifier
- 4a48865e370246c2f1f672529167ff7be828dfcce7f6445793b05f6d9f239e27
- Enrichment time
- 2026-06-26T08:52:23Z
- AI-assisted enrichment
- Yes
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