- Security updates: upgraded base Docker image to Alpine 3.19.0 and Go builder to Go 1.21.5.
- Bugfixes for vmagent (prevent fatal flush metainfo panic, proper ZSTD decoding, correct label handling in stream aggregation) and vmalert (sanitize label names before sending to Alertmanager).
- Fixed escaping of '<' characters in responses from the /federate endpoint.
v1.93.9
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Enable multitenancy via headers by default for vmselect, vminsert and vmagent (default flag changed to true), which may break existing URL patterns.
Upgrade Go builder to Go1.26.6, addressing security issues in the runtime.
Upgrade Go builder from 1.26.5 to 1.26.6 for security patches.