Skip to content
Fencer Vulns
medium 4.3

CVE-2021-3393 json

An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11.

published 2021-04-01 5 y ago modified 2026-09-08 2 mo ago also BIT-postgresql-2021-3393 , EUVD-2021-26722 , JLSEC-2026-34

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

Patch / fix

  • bitnami postgresql 11.11.0, 12.6.0, 13.2.0
  • julia LibPQ_jll 14.1.0+0
  • postgresql postgresql 11.11, 12.6, 13.2
  • postgresql-13 Debian 11 13.2-1

debian advisories DEBIAN-CVE-2021-3393

  • postgresql-12 Ubuntu 20.04 LTS 12.6-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2021-3393

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pgaudit RHEL 8 1.4.0-6.module+el8.4.0+11288+c193d6d7
  • postgresql RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-test RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-pltcl RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-plperl RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-server RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-contrib RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7
  • postgresql-upgrade RHEL 8 12.7-1.module+el8.4.0+11288+c193d6d7

red hat advisories RHSA-2021:2389RHSA-2021:2372RHSA-2021:2394

  • postgresql12 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 12.7-3.15.3
  • postgresql12 SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +6 more 12.6-3.21.4
  • postgresql13 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 13.2-3.6.1
  • postgresql12 SLE Module for Server Applications 15 SP2, SLE Module for Basesystem 15 SP2 12.6-8.16.1
  • postgresql13 SLE Module for Server Applications 15 SP2, SLE Module for Package Hub 15 SP2, SLE Module for Basesystem 15 SP2 13.2-5.6.1

suse advisories SUSE-SU-2021:1783-1SUSE-SU-2021:0695-1SUSE-SU-2021:0545-1SUSE-SU-2021:0544-1SUSE-SU-2021:0543-1

  • postgresql17 openSUSE Tumbleweed 17.6-2.1
  • postgresql16 openSUSE Tumbleweed 16.4-1.1
  • postgresql11 openSUSE Tumbleweed 11.13-1.3
  • postgresql12 openSUSE Tumbleweed 12.8-1.3
  • postgresql13 openSUSE Tumbleweed 13.4-1.3
  • postgresql14 openSUSE Tumbleweed 14.5-2.1
  • postgresql15 openSUSE Tumbleweed 15.4-2.1
  • postgresql12 openSUSE Leap 15.2 12.6-lp152.3.16.1

opensuse advisories openSUSE-SU-2025:15580-1openSUSE-SU-2024:14360-1openSUSE-SU-2024:11185-1openSUSE-SU-2024:11186-1openSUSE-SU-2024:11187-1openSUSE-SU-2024:12387-1

  • postgres-decoderbufs AlmaLinux 8 0.10.0-2.module_el8.6.0+2760+1746ec94
  • postgres-decoderbufs AlmaLinux 8 0.10.0-2.module_el8.6.0+2758+4f4474df

almalinux advisories ALSA-2021:2372

  • pgaudit Rocky Linux 8 1.4.0-6.module+el8.4.0+587+d46efd10
  • postgresql Rocky Linux 8 12.7-1.module+el8.4.0+545+ca56da2e
  • postgres-decoderbufs Rocky Linux 8 0.10.0-2.module+el8.5.0+684+c3892ef9
  • postgres-decoderbufs Rocky Linux 8 0.10.0-2.module+el8.4.0+424+71d47d9a

rocky linux advisories RLSA-2021:2372

  • postgresql Alpine 3.10, Alpine 3.9 11.11-r0
  • postgresql Alpine 3.12, Alpine 3.11 12.6-r0
  • postgresql Alpine 3.14, Alpine 3.13 13.2-r0
  • postgresql13 Alpine 3.19, Alpine 3.18, Alpine 3.17 +2 more 13.2-r0
  • postgresql14 Alpine 3.20, Alpine 3.19, Alpine 3.18 +3 more 13.2-r0
  • postgresql15 Alpine 3.20, Alpine 3.19, Alpine 3.18 +1 more 13.2-r0

alpine advisories ALPINE-CVE-2021-3393

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • postgresql Arch Linux 13.2-1

arch linux advisories AVG-1567

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3393 updated cvss 3.1

postgresql: Partition constraint violation errors leak values of denied columns

  • Red Hat Enterprise Linux AppStream (v. 8) pgaudit 1.4.0-6.module+el8.4.0+11288+c193d6d7, postgresql 12.7-1.module+el8.4.0+11288+c193d6d7, postgresql-test 12.7-1.module+el8.4.0+11288+c193d6d7, postgresql-pltcl 12.7-1.module+el8.4.0+11288+c193d6d7, postgresql-plperl 12.7-1.module+el8.4.0+11288+c193d6d7, postgresql-server 12.7-1.module+el8.4.0+11288+c193d6d7, +5 more
    fixed: vendor fix RHSA-2021:2372
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) pgaudit 1.4.0-4.module+el8.2.0+9043+1dbb5661, postgresql 12.7-1.module+el8.2.0+11251+7a3cc531, postgresql-test 12.7-1.module+el8.2.0+11251+7a3cc531, postgresql-pltcl 12.7-1.module+el8.2.0+11251+7a3cc531, postgresql-plperl 12.7-1.module+el8.2.0+11251+7a3cc531, postgresql-server 12.7-1.module+el8.2.0+11251+7a3cc531, +5 more
    fixed: vendor fix RHSA-2021:2389
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-postgresql12-postgresql 12.7-1.el7, rh-postgresql12-postgresql-libs 12.7-1.el7, rh-postgresql12-postgresql-test 12.7-1.el7, rh-postgresql12-postgresql-pltcl 12.7-1.el7, rh-postgresql12-postgresql-plperl 12.7-1.el7, rh-postgresql12-postgresql-server 12.7-1.el7, +5 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-postgresql12-postgresql 12.7-1.el7, rh-postgresql12-postgresql-libs 12.7-1.el7, rh-postgresql12-postgresql-test 12.7-1.el7, rh-postgresql12-postgresql-pltcl 12.7-1.el7, rh-postgresql12-postgresql-plperl 12.7-1.el7, rh-postgresql12-postgresql-server 12.7-1.el7, +5 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-postgresql12-postgresql 12.7-1.el7, rh-postgresql12-postgresql-libs 12.7-1.el7, rh-postgresql12-postgresql-test 12.7-1.el7, rh-postgresql12-postgresql-pltcl 12.7-1.el7, rh-postgresql12-postgresql-plperl 12.7-1.el7, rh-postgresql12-postgresql-server 12.7-1.el7, +5 more
    fixed: vendor fix RHSA-2021:2394
  • Red Hat build of Quarkus postgresql Red Hat Decision Manager 7 postgresql Red Hat Enterprise Linux 6 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +2 more Red Hat Enterprise Linux 7 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +3 more Red Hat Enterprise Linux 8 libpq, pgaudit, pg_repack, postgresql, postgresql-test, postgresql-pltcl, +8 more Red Hat Enterprise Linux 9 postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, postgresql-contrib, +4 more
    +5 more products
    Red Hat Fuse 7 postgresql Red Hat JBoss Enterprise Application Platform 6 postgresql Red Hat JBoss Enterprise Application Platform 7 postgresql Red Hat Process Automation 7 postgresql Red Hat Software Collections rh-postgresql10-postgresql, rh-postgresql10-postgresql-libs, rh-postgresql10-postgresql-test, rh-postgresql10-postgresql-pltcl, rh-postgresql10-postgresql-plperl, rh-postgresql10-postgresql-server, +5 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N
OSV 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami postgresql
<11.11.0
>=12.0.0, <12.6.0
>=13.0.0, <13.2.0
11.11.0
12.6.0
13.2.0
julia LibPQ_jll
<14.1.0+0
14.1.0+0

Affected products

  • n/a postgresql

Classification

Weakness
  • CWE-209 Generation of Error Message Containing Sensitive Information
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.