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Fencer Vulns
high 8.1

CVE-2020-25694 json

A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24.

published 2020-11-16 5 y ago modified 2026-09-08 2 mo ago also BIT-postgresql-2020-25694 , EUVD-2020-18355 , JLSEC-2026-26

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. If a client application that creates additional database connections only reuses the basic connection parameters while dropping security-relevant parameters, an opportunity for a man-in-the-middle attack, or the ability to observe clear-text transmissions, could exist. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Patch / fix

  • bitnami postgresql 9.5.24, 9.6.20, 10.15.0, 11.10.0, 12.5.0, 13.1.0
  • julia LibPQ_jll 14.1.0+0
  • postgresql postgresql 9.5.24, 9.6.20, 10.15, 11.10, 12.5, 13.1
  • postgresql-13 Debian 11 13.1-1

debian advisories DEBIAN-CVE-2020-25694

  • postgresql-10 Ubuntu 18.04 LTS 10.15-0ubuntu0.18.04.1
  • postgresql-12 Ubuntu 20.04 LTS 12.5-0ubuntu0.20.04.1
  • postgresql-9.5 Ubuntu 16.04 LTS 9.5.24-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2020-25694

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

  • postgresql RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-test RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-pltcl RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-plperl RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-server RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-contrib RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-plpython3 RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6
  • postgresql-test-rpm-macros RHEL 8 9.6.20-1.module+el8.3.0+8938+7f0e88b6

red hat advisories RHSA-2021:0167RHSA-2021:0166RHSA-2021:0164RHSA-2021:0163RHSA-2020:5661RHSA-2020:5619

  • postgresql13 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 13.1-3.3.1
  • postgresql SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 13-4.7.1
  • postgresql12 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 12.5-3.12.3
  • postgresql13 SLE Module for Server Applications 15 SP2, SLE Module for Package Hub 15 SP2, SLE Module for Basesystem 15 SP2 13.1-5.3.15
  • postgresql SLE Module for Server Applications 15 SP2, SLE Module for Package Hub 15 SP2, SLE Module for Basesystem 15 SP2 13-4.6.7
  • postgresql12 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 12.5-3.9.3
  • postgresql10 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 10.15-4.9.1
  • postgresql96 SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES 12 SP3-LTSS +8 more 9.6.20-6.8.1

suse advisories SUSE-SU-2021:0217-1SUSE-SU-2021:0175-1SUSE-SU-2020:3630-1SUSE-SU-2020:3464-1SUSE-SU-2020:3477-1SUSE-SU-2020:3476-1

  • postgresql17 openSUSE Tumbleweed 17.6-2.1
  • postgresql16 openSUSE Tumbleweed 16.4-1.1
  • postgresql10 openSUSE Tumbleweed 10.18-1.3
  • 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

opensuse advisories openSUSE-SU-2025:15580-1openSUSE-SU-2024:14360-1openSUSE-SU-2024:11184-1openSUSE-SU-2024:11185-1openSUSE-SU-2024:11186-1openSUSE-SU-2024:11187-1

  • 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-2020:5620

  • pgaudit Rocky Linux 8 1.4.0-4.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-2020:5620

  • postgresql Alpine 3.10, Alpine 3.9 11.10-r0
  • postgresql Alpine 3.14, Alpine 3.13, Alpine 3.12 +1 more 12.5-r0
  • postgresql12 Alpine 3.18, Alpine 3.17, Alpine 3.16 +1 more 12.5-r0
  • postgresql14 Alpine 3.20, Alpine 3.19, Alpine 3.18 +3 more 12.5-r0
  • postgresql15 Alpine 3.20, Alpine 3.19, Alpine 3.18 +1 more 12.5-r0

alpine advisories ALPINE-CVE-2020-25694

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 12.5-1

arch linux advisories AVG-1276

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-2020-25694 updated cvss 8.1

postgresql: Reconnection can downgrade connection security settings

  • Red Hat Enterprise Linux 5 postgresql, postgresql84 Red Hat Enterprise Linux 6 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +2 more Red Hat Storage 3 postgresql
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) libpq 12.5-1.el8_3, pgaudit 1.4.0-4.module+el8.3.0+9042+664538f4, postgresql 12.5-1.module+el8.3.0+9042+664538f4, postgresql 10.15-1.module+el8.3.0+8944+1ca16b1f, postgresql 9.6.20-1.module+el8.3.0+8938+7f0e88b6, postgresql-test 12.5-1.module+el8.3.0+9042+664538f4, +23 more
    fixed: vendor fix RHSA-2020:5401
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) libpq 12.5-1.el8_0, postgresql 10.15-1.module+el8.0.0+9155+4a85661a, postgresql 9.6.20-1.module+el8.0.0+9157+356b8def, postgresql-test 10.15-1.module+el8.0.0+9155+4a85661a, postgresql-pltcl 10.15-1.module+el8.0.0+9155+4a85661a, postgresql-test 9.6.20-1.module+el8.0.0+9157+356b8def, +12 more
    fixed: vendor fix RHSA-2020:5638
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) libpq 12.5-2.el8_1, postgresql 10.15-1.module+el8.1.0+9154+cd474635, postgresql 9.6.20-1.module+el8.1.0+9156+8ff1384f, postgresql-test 10.15-1.module+el8.1.0+9154+cd474635, postgresql-pltcl 10.15-1.module+el8.1.0+9154+cd474635, postgresql-test 9.6.20-1.module+el8.1.0+9156+8ff1384f, +12 more
    fixed: vendor fix RHSA-2021:0165
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) libpq 12.5-1.el8_2, pgaudit 1.4.0-4.module+el8.2.0+9043+1dbb5661, postgresql 12.5-1.module+el8.2.0+9043+1dbb5661, postgresql 10.15-1.module+el8.2.0+8945+21c7d5de, postgresql 9.6.20-1.module+el8.2.0+8939+9a3b4b64, postgresql-test 12.5-1.module+el8.2.0+9043+1dbb5661, +23 more
    fixed: vendor fix RHSA-2021:0057
  • Red Hat Enterprise Linux Client (v. 7) postgresql 9.2.24-6.el7_9, postgresql-libs 9.2.24-6.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) postgresql 9.2.24-6.el7_9, postgresql-test 9.2.24-6.el7_9, postgresql-pltcl 9.2.24-6.el7_9, postgresql-plperl 9.2.24-6.el7_9, postgresql-server 9.2.24-6.el7_9, postgresql-contrib 9.2.24-6.el7_9, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) postgresql 9.2.24-6.el7_9, postgresql-test 9.2.24-6.el7_9, postgresql-pltcl 9.2.24-6.el7_9, postgresql-plperl 9.2.24-6.el7_9, postgresql-server 9.2.24-6.el7_9, postgresql-contrib 9.2.24-6.el7_9, +2 more Red Hat Enterprise Linux Server (v. 7) postgresql 9.2.24-6.el7_9, postgresql-libs 9.2.24-6.el7_9, postgresql-test 9.2.24-6.el7_9, postgresql-pltcl 9.2.24-6.el7_9, postgresql-plperl 9.2.24-6.el7_9, postgresql-server 9.2.24-6.el7_9, +2 more Red Hat Enterprise Linux Server Optional (v. 7) postgresql-upgrade 9.2.24-6.el7_9 Red Hat Enterprise Linux Workstation (v. 7) postgresql 9.2.24-6.el7_9, postgresql-libs 9.2.24-6.el7_9, postgresql-test 9.2.24-6.el7_9, postgresql-pltcl 9.2.24-6.el7_9, postgresql-plperl 9.2.24-6.el7_9, postgresql-server 9.2.24-6.el7_9, +2 more
    +1 more products
    Red Hat Enterprise Linux Workstation Optional (v. 7) postgresql-upgrade 9.2.24-6.el7_9
    fixed: vendor fix RHSA-2021:1512
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-postgresql12-postgresql 12.5-1.el7, rh-postgresql10-postgresql 10.15-1.el7, rh-postgresql12-postgresql-libs 12.5-1.el7, rh-postgresql12-postgresql-test 12.5-1.el7, rh-postgresql10-postgresql-libs 10.15-1.el7, rh-postgresql10-postgresql-test 10.15-1.el7, +16 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-postgresql12-postgresql 12.5-1.el7, rh-postgresql10-postgresql 10.15-1.el7, rh-postgresql12-postgresql-libs 12.5-1.el7, rh-postgresql12-postgresql-test 12.5-1.el7, rh-postgresql10-postgresql-libs 10.15-1.el7, rh-postgresql10-postgresql-test 10.15-1.el7, +16 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-postgresql12-postgresql 12.5-1.el7, rh-postgresql10-postgresql 10.15-1.el7, rh-postgresql12-postgresql-libs 12.5-1.el7, rh-postgresql12-postgresql-test 12.5-1.el7, rh-postgresql10-postgresql-libs 10.15-1.el7, rh-postgresql10-postgresql-test 10.15-1.el7, +16 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-postgresql12-postgresql 12.5-1.el7, rh-postgresql10-postgresql 10.15-1.el7, rh-postgresql12-postgresql-libs 12.5-1.el7, rh-postgresql12-postgresql-test 12.5-1.el7, rh-postgresql10-postgresql-libs 10.15-1.el7, rh-postgresql10-postgresql-test 10.15-1.el7, +16 more
    fixed: vendor fix RHSA-2020:5316
  • Red Hat build of Quarkus postgresql Red Hat Decision Manager 7 postgresql Red Hat Enterprise Linux 9 postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, postgresql-contrib, +4 more Red Hat Fuse 7 postgresql Red Hat JBoss Enterprise Application Platform 6 postgresql Red Hat JBoss Enterprise Application Platform 7 postgresql
    +1 more products
    Red Hat Process Automation 7 postgresql
    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

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
OSV 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami postgresql
<9.5.24
>=9.6.0, <9.6.20
>=10.0.0, <10.15.0
>=11.0.0, <11.10.0
>=12.0.0, <12.5.0
>=13.0.0, <13.1.0
9.5.24
9.6.20
10.15.0
11.10.0
12.5.0
13.1.0
julia LibPQ_jll
<14.1.0+0
14.1.0+0

Affected products

  • n/a postgresql

Classification

Weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm
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.