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 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade postgresql17Upgrade postgresql16Upgrade postgresql18Upgrade postgresql15 | Aug 17, 2026 | Aug 13, 2026 |
| Amazon_linux_2023 | — | Upgrade postgresql17-docs-debuginfoUpgrade postgresql17-upgrade-devel-debuginfoUpgrade postgresql18-upgrade-devel-debuginfoUpgrade postgresql18-server-devel-debuginfoUpgrade postgresql15-contribUpgrade postgresql17-testUpgrade postgresql15-docsUpgrade postgresql15-serverUpgrade postgresql15-upgrade-devel-debuginfoUpgrade postgresql16-server-develUpgrade postgresql17-private-libs-debuginfoUpgrade postgresql16-staticUpgrade postgresql17-test-debuginfoUpgrade postgresql18-serverUpgrade postgresql16-plperlUpgrade postgresql15-upgrade-develUpgrade postgresql16-serverUpgrade postgresql15-docs-debuginfoUpgrade postgresql17-staticUpgrade postgresql18-server-develUpgrade postgresql16-private-libs-debuginfoUpgrade postgresql18-debuginfoUpgrade postgresql18-llvmjit-debuginfoUpgrade postgresql18-docs-debuginfoUpgrade postgresql15-llvmjitUpgrade postgresql15-plperl-debuginfoUpgrade postgresql15-staticUpgrade postgresql16-contribUpgrade postgresql16-debugsourceUpgrade postgresql17Upgrade postgresql17-serverUpgrade postgresql16Upgrade postgresql17-server-devel-debuginfoUpgrade postgresql17-private-develUpgrade postgresql15-private-libs-debuginfoUpgrade postgresql16-upgrade-debuginfoUpgrade postgresql18-private-libsUpgrade postgresql16-upgrade-devel-debuginfoUpgrade postgresql16-upgradeUpgrade postgresql16-test-rpm-macrosUpgrade postgresql15-pltclUpgrade postgresql18-debugsourceUpgrade postgresql18-pltclUpgrade postgresql15-plperlUpgrade postgresql15-debugsourceUpgrade postgresql17-upgrade-debuginfoUpgrade postgresql17-contribUpgrade postgresql17-debuginfoUpgrade postgresql15-debuginfoUpgrade postgresql16-contrib-debuginfoUpgrade postgresql15-plpython3Upgrade postgresql16-llvmjit-debuginfoUpgrade postgresql16-plpython3Upgrade postgresql17-pltcl-debuginfoUpgrade postgresql16-docsUpgrade postgresql18-plpython3Upgrade postgresql17-plperl-debuginfoUpgrade postgresql17-llvmjitUpgrade postgresql16-docs-debuginfoUpgrade postgresql17-server-debuginfoUpgrade postgresql17-docsUpgrade postgresql17-debugsourceUpgrade postgresql16-private-develUpgrade postgresql15-upgradeUpgrade postgresql18-docsUpgrade postgresql15-server-develUpgrade postgresql16-plpython3-debuginfoUpgrade postgresql16-test-debuginfoUpgrade postgresql16-server-debuginfoUpgrade postgresql17-pltclUpgrade postgresql16-testUpgrade postgresql16-private-libsUpgrade postgresql15-testUpgrade postgresql15-private-develUpgrade postgresql17-upgrade-develUpgrade postgresql15-test-debuginfoUpgrade postgresql18-plpython3-debuginfoUpgrade postgresql15-test-rpm-macrosUpgrade postgresql17-test-rpm-macrosUpgrade postgresql15Upgrade postgresql17-plperlUpgrade postgresql16-pltcl-debuginfoUpgrade postgresql16-pltclUpgrade postgresql15-server-debuginfoUpgrade postgresql18-upgradeUpgrade postgresql18-test-rpm-macrosUpgrade postgresql18-pltcl-debuginfoUpgrade postgresql17-plpython3Upgrade postgresql18-upgrade-debuginfoUpgrade postgresql18-contribUpgrade postgresql17-upgradeUpgrade postgresql17-server-develUpgrade postgresql18-server-debuginfoUpgrade postgresql16-upgrade-develUpgrade postgresql17-llvmjit-debuginfoUpgrade postgresql18Upgrade postgresql17-plpython3-debuginfoUpgrade postgresql18-contrib-debuginfoUpgrade postgresql17-contrib-debuginfoUpgrade postgresql15-upgrade-debuginfoUpgrade postgresql15-server-devel-debuginfoUpgrade postgresql15-private-libsUpgrade postgresql15-pltcl-debuginfoUpgrade postgresql18-staticUpgrade postgresql18-private-libs-debuginfoUpgrade postgresql18-plperlUpgrade postgresql18-plperl-debuginfoUpgrade postgresql18-upgrade-develUpgrade postgresql18-test-debuginfoUpgrade postgresql16-server-devel-debuginfoUpgrade postgresql16-plperl-debuginfoUpgrade postgresql15-plpython3-debuginfoUpgrade postgresql18-private-develUpgrade postgresql17-private-libsUpgrade postgresql16-llvmjitUpgrade postgresql16-debuginfoUpgrade postgresql15-llvmjit-debuginfoUpgrade postgresql15-contrib-debuginfoUpgrade postgresql18-testUpgrade postgresql18-llvmjit | Sep 1, 2026 | Aug 13, 2026 |
| Debian | — | Upgrade postgresql-15Upgrade postgresql-17 | Aug 16, 2026 | Aug 16, 2026 |
| Freebsd | — | Upgrade postgresql14-serverUpgrade postgresql15-serverUpgrade postgresql18-serverUpgrade postgresql16-serverUpgrade postgresql17-server | Aug 17, 2026 | Aug 16, 2026 |
| Postgres | — | Upgrade to PostgreSQL version 17.11Upgrade to PostgreSQL version 14.24Upgrade to PostgreSQL version 15.19Upgrade to PostgreSQL version 16.15Upgrade to PostgreSQL version 18.6 | Aug 14, 2026 | Aug 13, 2026 |
| Redhat_linux | — | Upgrade postgresql18Upgrade pgaudit-debugsourceUpgrade postgis-clientUpgrade postgresql18-upgradeUpgrade postgresql-plperlUpgrade postgresqlUpgrade pgvectorUpgrade postgresql-test-rpm-macrosUpgrade postgresql18-contribUpgrade postgresql-debugsourceUpgrade postgresql18-staticUpgrade postgresql18-private-libsUpgrade postgresql18-plpython3-debuginfoUpgrade postgresql18-contrib-debuginfoUpgrade pgaudit-debuginfoUpgrade postgresql18-debugsourceUpgrade postgres-decoderbufsUpgrade postgres-decoderbufs-debuginfoUpgrade pg_repack-debuginfoUpgrade pg_repackUpgrade postgresql18-server-debuginfoUpgrade postgresql-serverUpgrade postgresql-debuginfoUpgrade postgis-client-debuginfoUpgrade postgresql-docsUpgrade pgvector-debuginfoUpgrade postgresql18-docsUpgrade postgresql-upgrade-debuginfoUpgrade postgresql-testUpgrade postgis-debugsourceUpgrade postgresql-staticUpgrade postgresql-server-debuginfoUpgrade postgresql18-upgrade-debuginfoUpgrade postgis-utilsUpgrade postgresql18-plpython3Upgrade pgauditUpgrade postgresql-private-libsUpgrade postgresql-server-develUpgrade postgis-docsUpgrade postgresql-private-develUpgrade postgresql-pltcl-debuginfoUpgrade postgresql-plpython3Upgrade postgresql-contribUpgrade postgisUpgrade postgresql-plperl-debuginfoUpgrade pg_repack-debugsourceUpgrade postgresql18-server-develUpgrade postgresql-test-debuginfoUpgrade postgis-upgrade-debuginfoUpgrade postgresql18-upgrade-develUpgrade postgresql18-plperl-debuginfoUpgrade postgresql18-testUpgrade postgresql18-pltcl-debuginfoUpgrade postgresql18-debuginfoUpgrade postgresql18-private-libs-debuginfoUpgrade postgresql18-upgrade-devel-debuginfoUpgrade postgresql-upgrade-develUpgrade postgresql18-serverUpgrade postgresql18-server-devel-debuginfoUpgrade postgresql-upgradeUpgrade postgis-upgradeUpgrade postgis-debuginfoUpgrade postgresql18-test-rpm-macrosUpgrade postgresql18-private-develUpgrade postgres-decoderbufs-debugsourceUpgrade postgresql-plpython3-debuginfoUpgrade postgresql-private-libs-debuginfoUpgrade postgresql-server-devel-debuginfoUpgrade postgresql18-test-debuginfoUpgrade postgresql-upgrade-devel-debuginfoUpgrade pgvector-debugsourceUpgrade postgresql18-docs-debuginfoUpgrade postgresql-contrib-debuginfoUpgrade postgresql-pltclUpgrade postgresql18-plperlNo solution existsUpgrade postgresql-docs-debuginfo | Aug 28, 2026 | Aug 13, 2026 |
| Rocky_linux | — | Upgrade postgres-decoderbufs-debugsourceUpgrade postgresql18-testUpgrade postgresql-plpython3-debuginfoUpgrade postgresql18-private-libs-debuginfoUpgrade postgresql-contrib-debuginfoUpgrade postgresql18-test-debuginfoUpgrade postgresql-plperlUpgrade postgresql18-server-develUpgrade postgresql18-debuginfoUpgrade postgis-upgradeUpgrade postgresql-testUpgrade postgresql-debugsourceUpgrade postgresql18-upgrade-devel-debuginfoUpgrade postgresql18-upgrade-develUpgrade postgresql18-server-devel-debuginfoUpgrade postgresql-plpython3Upgrade postgresql-pltclUpgrade pg_repack-debuginfoUpgrade postgresql18-private-develUpgrade postgresql-serverUpgrade postgisUpgrade postgresql18-plperl-debuginfoUpgrade pgvectorUpgrade postgresql-upgrade-debuginfoUpgrade pgvector-debugsourceUpgrade postgresql-upgradeUpgrade postgresql-plperl-debuginfoUpgrade pgaudit-debugsourceUpgrade postgresql-test-debuginfoUpgrade postgresql-docs-debuginfoUpgrade postgresql-private-libsUpgrade postgresql18-docsUpgrade postgresql18-serverUpgrade postgresql18-upgrade-debuginfoUpgrade postgresql18-plpython3-debuginfoUpgrade postgresql-upgrade-develUpgrade postgresql-private-develUpgrade postgresql18-contrib-debuginfoUpgrade postgis-utilsUpgrade postgresql18-private-libsUpgrade postgresql-server-develUpgrade postgresql-server-devel-debuginfoUpgrade postgresql-contribUpgrade postgresqlUpgrade postgres-decoderbufsUpgrade postgresql-docsUpgrade postgresql18-upgradeUpgrade postgresql18-docs-debuginfoUpgrade postgresql18Upgrade postgresql-private-libs-debuginfoUpgrade postgis-upgrade-debuginfoUpgrade postgis-docsUpgrade pgauditUpgrade pg_repack-debugsourceUpgrade postgis-debugsourceUpgrade pgaudit-debuginfoUpgrade postgresql18-server-debuginfoUpgrade postgresql18-debugsourceUpgrade postgresql18-plperlUpgrade postgresql-upgrade-devel-debuginfoUpgrade postgresql-staticUpgrade pgvector-debuginfoUpgrade postgresql-server-debuginfoUpgrade postgresql-pltcl-debuginfoUpgrade postgis-debuginfoUpgrade postgresql-debuginfoUpgrade postgis-client-debuginfoUpgrade postgis-clientUpgrade pg_repackUpgrade postgresql18-staticUpgrade postgresql18-contribUpgrade postgres-decoderbufs-debuginfoUpgrade postgresql18-plpython3 | Sep 17, 2026 | Sep 15, 2026 |
| Ubuntu | — | Upgrade postgresql-14Upgrade postgresql-16Upgrade postgresql-18 | Aug 20, 2026 | Aug 13, 2026 |
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