CVE-2026-2003
published 2026-02-12CVE-2026-2003: Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of…
PriorityP424medium4.3CVSS 3.1
AVNACLPRLUINSUCLINAN
EPSS
0.28%
20.2th percentile
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | postgresql-13 | < postgresql-13 13.23-0+deb11u2 (bullseye) | postgresql-13 13.23-0+deb11u2 (bullseye) |
| debian | postgresql-15 | < postgresql-13 13.23-0+deb11u2 (bullseye) | postgresql-13 13.23-0+deb11u2 (bullseye) |
| debian | postgresql-17 | < postgresql-13 13.23-0+deb11u2 (bullseye) | postgresql-13 13.23-0+deb11u2 (bullseye) |
| debian | postgresql-18 | < postgresql-13 13.23-0+deb11u2 (bullseye) | postgresql-13 13.23-0+deb11u2 (bullseye) |
| postgresql | postgresql | < 14.21 | 14.21 |
| postgresql | postgresql | >= 14.0 < 14.21 | 14.21 |
| postgresql | postgresql | >= 15 < 15.16 | 15.16 |
| postgresql | postgresql | >= 15.0 < 15.16 | 15.16 |
| postgresql | postgresql | >= 16 < 16.12 | 16.12 |
| postgresql | postgresql | >= 16.0 < 16.12 | 16.12 |
| postgresql | postgresql | >= 17 < 17.8 | 17.8 |
| postgresql | postgresql | >= 17.0 < 17.8 | 17.8 |
| postgresql | postgresql | >= 18 < 18.2 | 18.2 |
| postgresql | postgresql | >= 18.0 < 18.2 | 18.2 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
vendor_ubuntu4.3MEDIUM
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Ubuntu
PostgreSQL vulnerabilities
vendor_ubuntu·2026-03-04·CVSS 4.3
CVE-2026-2003 [MEDIUM] PostgreSQL vulnerabilities
Title: PostgreSQL vulnerabilities
Summary: Several security issues were fixed in PostgreSQL.
Altan Birler discovered that PostgreSQL incorrectly validated oidvector
types. An attacker could possibly use this issue to obtain a few bytes of
sensitive information. (CVE-2026-2003)
Daniel Firer discovered that PostgreSQL incorrectly validated input in the
intarray extension. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2026-2004)
It was dicovered that PosgreSQL incorrectly handled certain pgcrypto memory
operations. An attacker could possibly use this issue to execute arbitrary
code. (CVE-2026-2005)
Paul Gerste and Moritz Sanft discovered that PostgreSQL incorrectly
validated multibyte character lengths. An attacker could possibly use this
issue to execute arbi
Red Hat
postgresql: PostgreSQL oidvector discloses a few bytes of memory
vendor_redhat·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CWE-1287 postgresql: PostgreSQL oidvector discloses a few bytes of memory
postgresql: PostgreSQL oidvector discloses a few bytes of memory
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
A type validation flaw has been discovered in postgresql. Improper validation of the type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. It is possible that this may expose confidential information but it is unlikely.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Secu
Debian
CVE-2026-2003: postgresql-13 - Improper validation of type "oidvector" in PostgreSQL allows a database user to ...
vendor_debian·2026·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003: postgresql-13 - Improper validation of type "oidvector" in PostgreSQL allows a database user to ...
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Scope: local
bullseye: resolved (fixed in 13.23-0+deb11u2)
OSV
postgresql-14, postgresql-16, postgresql-17 vulnerabilities
osv·2026-03-04·CVSS 4.3
CVE-2026-2003 [MEDIUM] postgresql-14, postgresql-16, postgresql-17 vulnerabilities
postgresql-14, postgresql-16, postgresql-17 vulnerabilities
Altan Birler discovered that PostgreSQL incorrectly validated oidvector
types. An attacker could possibly use this issue to obtain a few bytes of
sensitive information. (CVE-2026-2003)
Daniel Firer discovered that PostgreSQL incorrectly validated input in the
intarray extension. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2026-2004)
It was dicovered that PosgreSQL incorrectly handled certain pgcrypto memory
operations. An attacker could possibly use this issue to execute arbitrary
code. (CVE-2026-2005)
Paul Gerste and Moritz Sanft discovered that PostgreSQL incorrectly
validated multibyte character lengths. An attacker could possibly use this
issue to execute arbitrary code. (CVE-2026-2006)
GHSA
GHSA-f3vj-j2m6-8hfj: Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory
ghsa_unreviewed·2026-02-12
CVE-2026-2003 [MEDIUM] CWE-1287 GHSA-f3vj-j2m6-8hfj: Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
OSV
CVE-2026-2003: Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory
osv·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003: Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-2003 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-2003 :
PostgreSQL vulnerability analysis and mitigation
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Source : NVD
## 4.3
Score
Published February 12, 2026
Severity MEDIUM
CNA Score 4.3
Affected Technologies
PostgreSQL
Rocky Linux
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 4.9
Exploitation Probability (EPSS) N/A
Affected packages and libraries
postgresql16
postgresql:12::postgre
Bugzilla
CVE-2026-2003 postgresql17: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
bugzilla·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003 postgresql17: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
CVE-2026-2003 postgresql17: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, chan
Bugzilla
CVE-2026-2003 postgresql: PostgreSQL oidvector discloses a few bytes of memory
bugzilla·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003 postgresql: PostgreSQL oidvector discloses a few bytes of memory
CVE-2026-2003 postgresql: PostgreSQL oidvector discloses a few bytes of memory
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Via RHSA-2026:4254 https://access.redhat.com/errata/RHSA-2026:4254
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10.0 Extended Update Support
Via RHSA-2026:4441 https://access.redhat.com/errata/RHSA-2026
Bugzilla
CVE-2026-2003 postgresql16: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
bugzilla·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003 postgresql16: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
CVE-2026-2003 postgresql16: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, chan
Bugzilla
CVE-2026-2003 mingw-postgresql: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
bugzilla·2026-02-12·CVSS 4.3
CVE-2026-2003 [MEDIUM] CVE-2026-2003 mingw-postgresql: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
CVE-2026-2003 mingw-postgresql: PostgreSQL oidvector discloses a few bytes of memory [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version,
2026-02-12
Published