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8.8 High

CVE-2026-14664 Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user…

Description

Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved unanticipated data growth when round-tripped through pg_wchar. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected products and versions

Product Affected versions Fixed in
postgresql 18 18 → < 18.6 18.6
postgresql 17 17 → < 17.11 17.11
postgresql 16 16 → < 16.15 16.15
postgresql 15 15 → < 15.19 15.19
postgresql 14.24 earliest → < 14.24 14.24

References

Timeline

  1. Published
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