Red Hat Security Advisory: postgresql security update

Fixed packages 13

Vulnerabilities 11

• High 8.8
  CVE-2026-14662 Public exploit

  PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound

  Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating s…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-14669 Public exploit

  PostgreSQL to_char heap buffer overflow executes arbitrary code

  Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code as the operating system user running the database, via a long POSIX timezone abbreviation. Versions before PostgreSQL 18.6, 17.11, 16.15, …

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-14670

  PostgreSQL plperl tied object heap buffer overflow executes arbitrary code

  Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-14671

  PostgreSQL refint plan cache type confusion executes arbitrary code

  Type confusion in PostgreSQL module "refint" allows an object creator to execute arbitrary code as the operating system user running the database. The fix for this emerged as a non-security bug report, and the fix appear in the git repository with subject "re…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-14677

  PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound

  Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user runnin…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-14680

  PostgreSQL type confusion via "internal" arguments

  Type confusion with PostgreSQL "internal" data type arguments allows any user to execute arbitrary code as the operating system user running the database, via calls to functions with that argument type. Type "internal" represents a class of mutually-incompati…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-15742

  PostgreSQL fuzzystrmatch writes effectively-arbitrary addresses, via integer wraparound

  Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or levenshtein_less_equal(…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-16239

  PostgreSQL type confusion in cursor CLOSE + DECLARE executes arbitrary code

  Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.6, 17.11, 16.15, …

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.8
  CVE-2026-18408

  PostgreSQL psql \unrestrict lets superuser of pg_dump origin server execute arbitrary code in psql client

  Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql \restrict meta-command in…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.2
  CVE-2026-14679

  PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory

  Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026
• High 8.1
  CVE-2026-6464

  PostgreSQL psql COPY FROM STDIN early failure processes data lines as psql commands

  Untrusted data inclusion in PostgreSQL psql COPY may allow a server administrator to elicit execution of data lines as psql commands, via error injection. If the "COPY FROM STDIN" or "\copy FROM STDIN" command fails before the server indicates that it awaits …

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Aug 13, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515302
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515303
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515306
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515308
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515313
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515314
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515316
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515317
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515321
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515322
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2515325
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_84585.json
• report
  https://access.redhat.com/security/cve/CVE-2026-6464
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-6464
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-6464
• article
  https://www.postgresql.org/support/security/CVE-2026-6464/
• report
  https://access.redhat.com/security/cve/CVE-2026-14662
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14662
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-14662
• article
  https://www.postgresql.org/support/security/CVE-2026-14662/
• report
  https://access.redhat.com/security/cve/CVE-2026-14669
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14669
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-14669
• article
  https://www.postgresql.org/support/security/CVE-2026-14669/
• report
  https://access.redhat.com/security/cve/CVE-2026-14670
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14670
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-14670
• article
  https://www.postgresql.org/support/security/CVE-2026-14670/
• report
  https://access.redhat.com/security/cve/CVE-2026-14671
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14671
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-14671
• article
  https://www.postgresql.org/support/security/CVE-2026-14671/
• report
  https://access.redhat.com/security/cve/CVE-2026-14677
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14677
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-14677
• article
  https://www.postgresql.org/support/security/CVE-2026-14677/
• report
  https://access.redhat.com/security/cve/CVE-2026-14679
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-14679