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FIPS 25.3 Backport of #127318 - Distrust the compromised eMudhra certificates - #2751

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@mkmkme mkmkme commented Oct 31, 2026

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The changes are taken from #2708 merge commit

Changelog category (leave one):

  • Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Hardening: certificate chains containing the compromised eMudhra intermediate CAs or the roots that issued them (emSign Root TLS CA - G3, emSign ECC Root CA - G3) are rejected even if the trust store of the operating system still trusts them. The CA certificates embedded into the binary (used only when the system has none) are updated from the Chromium root store. There is no security issue in typical use cases. (ClickHouse#127318 by @alexey-milovidov)

CI/CD Options

Exclude tests:

  • Fast test
  • Integration Tests
  • Stateless tests
  • Stateful tests
  • Unit tests
  • Performance tests
  • Aarch64 tests
  • All with ASAN
  • All with TSAN
  • All with MSAN
  • All with UBSAN
  • All with Coverage
  • All Regression
  • Disable CI Cache

Regression jobs to run:

  • Fast suites (mostly <1h)
  • Aggregate Functions (2h)
  • Alter (1.5h)
  • Benchmark (30m)
  • CAS (content-addressed storage; Antalya only)
  • ClickHouse Keeper (1h)
  • Iceberg (2h)
  • LDAP (1h)
  • OAuth (5m)
  • Parquet (1.5h)
  • RBAC (1.5h)
  • SSL Server (1h)
  • S3 (2h)
  • S3 Export (2h)
  • Swarms (30m)
  • Tiered Storage (2h)

Stable 25.3 Backport of ClickHouse#127318 - Distrust the compromised eMudhra certificates
@mkmkme mkmkme added fips Work related to Altinity FIPS releases fips-25.3 labels Oct 31, 2026

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