v1.18.1
2026-06-30T08:52:23Z•8276b15d1ed6019ee8d8ffddb13082643582356484ed80b527439716348d108b
AnnotationSetGO-2026-5037GO-2026-5039GOMAXPROCSGOMEMLIMITGo-toolchainOPARFC9110User-Agentbreaking-changedependency-updatehangmemory-leakopen-policy-agentplugin-managerrelease-notesresource-limitssecurity
What happened
Open Policy Agent (OPA) release notes covering v1.15.1 through v1.18.1. v1.18.1 fixes an AnnotationSet memory leak introduced in v1.17.0 (update recommended if you see excess memory usage). v1.18.0 contains several features/bugfixes and a breaking change: the outbound User-Agent string was changed to conform to RFC 9110 (may affect exact-match server/WAF rules). Multiple releases (v1.17.1, v1.16.2, v1.15.2) update the Go toolchain (to Go 1.26.x) to address stdlib security vulnerabilities referenced as GO-2026-5039 and GO-2026-5037. Other fixes include a plugin-manager shutdown hang patch (v1.6
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
- 8276b15d1ed6019ee8d8ffddb13082643582356484ed80b527439716348d108b
- Enrichment time
- 2026-06-30T08:52:23Z
- AI-assisted enrichment
- Yes
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