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BIT-POSTGRESQL-2026-6473 PostgreSQL server undersizes allocations, via integer wraparound

🗓️ 18 May 2026 05:52:58Reported by GoogleType 
osv
 osv🔗 osv.dev👁 9 Views

Integer wraparound in PostgreSQL lets an unprivileged user cause out-of-bounds writes and code execution.

Related
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
16 Jun 202615:07
–ibm
FreeBSD		PostgreSQL -- Multiple vulnerabilities
14 May 202600:00
–freebsd
ATTACKERKB		CVE-2026-6473
14 May 202613:00
–attackerkb
Tenable Nessus		Amazon Linux 2023 : postgresql17, postgresql17-contrib, postgresql17-llvmjit (ALAS2023-2026-1766)
8 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : postgresql16, postgresql16-contrib, postgresql16-llvmjit (ALAS2023-2026-1767)
8 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : postgresql15, postgresql15-contrib, postgresql15-llvmjit (ALAS2023-2026-1768)
8 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : postgresql18, postgresql18-contrib, postgresql18-llvmjit (ALAS2023-2026-1780)
8 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : postgresql, --advisory ALAS2POSTGRESQL14-2026-024 (ALASPOSTGRESQL14-2026-024)
8 Jun 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0164: libpq (ALINUX3-SA-2026:0164)
1 Jul 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : postgresql:16 (ALSA-2026:26203)
2 Jul 202600:00
–nessus
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18 May 2026 08:02Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.18.8
EPSS0.00668
SSVC
integer wraparoundpostgresqlunprivileged userout-of-bounds writescode executionsegmentation faultaffected versions
9