- Added ability to specify a list of log fields for message extraction via the msg query argument and VL Msg Field HTTP header.
- Enabled accepting logs without a msg field, defaulting to the value of the defaultMsgValue flag.
- Fixed a runtime panic (index out of range) that occurred during low‑rate data ingestion, introduced in v0.38.0.
v0.39.0-victorialogs
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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.