CVE-2026-6473 (GCVE-0-2026-6473)

Vulnerability from cvelistv5 – Published: 2026-05-14 13:00 – Updated: 2026-06-30 03:16
VLAI
Title
PostgreSQL server undersizes allocations, via integer wraparound
Summary
Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
URL Tags
https://www.postgresql.org/support/security/CVE-2…
https://access.redhat.com/security/cve/CVE-2026-6473 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2477448 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:27718 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27743 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27742 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27738 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28999 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26181 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28143 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29815 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:32994 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26561 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29953 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26524 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29904 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:32983 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26525 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29212 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28037 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26203 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26204 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27741 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22878 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
n/a PostgreSQL Affected: 18 , < 18.4 (rpm)
Affected: 17 , < 17.10 (rpm)
Affected: 16 , < 16.14 (rpm)
Affected: 15 , < 15.18 (rpm)
Affected: 0 , < 14.23 (rpm)
Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)     cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Self-service automation portal 2     cpe:/a:redhat:ansible_portal:2
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Credits
The PostgreSQL project thanks Anemone, A1ex, Xint Code, Jihe Wang, Jingzhou Fu, Pavel Kohout, Petr Simecek, www.aisle.com, Bruce Dang of Calif.io, and Sven Klemm for reporting this problem.
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    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.