CVE-2026-116336 PUBLISHED

PostgreSQL REINDEX CONCURRENTLY does not block DROP INDEX during index functions

Assigner: PostgreSQL
Reserved: 26.10.2026 Published: 12.11.2026 Updated: 12.11.2026

Operation on a dropped index in PostgreSQL REINDEX CONCURRENTLY allows an object creator to execute arbitrary code as the operating system user running the database, via an index expression that issues DROP INDEX. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor n/a
Product PostgreSQL
Versions Default: unaffected
  • affected from 18 to 18.7 (excl.)
  • affected from 17 to 17.12 (excl.)
  • affected from 16 to 16.16 (excl.)
  • affected from 15 to 15.20 (excl.)
  • affected from 0 to 14.25 (excl.)

Affected Configurations

attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema)

Credits

  • The PostgreSQL project thanks Florent Saudel for reporting this problem.

References

Problem Types

  • Access of Resource Using Incompatible Type ('Type Confusion') CWE
  • Operation on a Resource after Expiration or Release CWE