- Fix AzureAD OAuth client secret exposure via the /config endpoint (CVE-2026-42151).
- Reject snappy-compressed remote write/read requests when declared decoded length exceeds the limit (CVE-2026-42154).
- Patch stored XSS vulnerability in old UI heatmap chart tick labels.
3.5.3 / 2026-04-27
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Deprecate non‑true/all values for the stats query parameter on /api/v1/query and /api/v1/query_range, now returning a warning and slated for removal in the next major release.
Updated golang.org/x/text to v0.39.0 and google.golang.org/grpc to v1.82.1, fixing CVE‑2026‑56852 and GHSA‑hrxh‑6v49‑42gf.