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Security Advisories

CGA-8fr8-wr5r-rf44

Package

loki-3.5-promtail

Component

github.com/grafana/loki/v3

Latest update

Pending upstream fix

Aliases

  • CVE-2026-21726
  • GHSA-497x-rrr9-68jp
  • GO-2026-5115

Severity

5.3

Medium

CVSS V3

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References

  • https://nvd.nist.gov/vuln/detail/CVE-2026-21726
  • https://github.com/advisories/GHSA-497x-rrr9-68jp
  • https://pkg.go.dev/vuln/GO-2026-5115

Updates

Status

Pending upstream fix

Impact

Remediation of GHSA-497x-rrr9-68jp requires updating loki dependencies. The upstream loki v3 module removed the pkg/storage/wal package starting in v3.0.0. The loki-3.5 source tree contains cmd/segment-inspect, which imports github.com/grafana/loki/v3/pkg/storage/wal. When go mod tidy resolves dependencies, it picks up loki/v3 at the latest release (v3.7.1), which no longer contains that package, causing the build to fail with "module found but does not contain package github.com/grafana/loki/v3/pkg/storage/wal". Pending upstream loki providing a loki-3.5.x patch that removes or relocates the pkg/storage/wal import in the segment-inspect tool.

Status

Under investigation

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