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Vulnerabilities

Vulnerability · CVE-2023-5870

A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, an…

Published Dec 10, 2023 · catalog updated Nov 6, 2026 · the affected product

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-5870. EPSS is 2.56%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.56%
Remediation
Version ranges on file
Affected products
cpe postgresql/postgresql · cpe redhat/codeready linux builder eus · cpe redhat/codeready linux builder eus for power little endian eus

A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe postgresql/postgresql16.0
  • cpe postgresql/postgresql< 11.22
  • cpe postgresql/postgresql< 12.17
  • cpe postgresql/postgresql< 13.13
  • cpe postgresql/postgresql< 14.10
  • cpe postgresql/postgresql< 15.5
  • cpe redhat/codeready linux builder eus9.2
  • cpe redhat/codeready linux builder eus for power little endian eus9.0_ppc64le

How to fix CVE-2023-5870

  • Upgrade

    CVE-2023-5870 lists a fix boundary at 11.22. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 11.22

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-5870. EPSS is 2.56%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Compare what you have installed with redhat/codeready linux builder eus 9.2; redhat/codeready linux builder eus for power little endian eus 9.0_ppc64le. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption. EPSS 2.56%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

PostgreSQL security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 10, 2023 · NIST NVD

    Detected

    A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to lau

  2. Nov 6, 2026 · NIST NVD

    Updated

    A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to lau

Sources

  • CVE.orgVulnerability recordCVE-2023-5870

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2023-5870

    A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • NIST NVDNov 6, 2026
  • CVE.orgNov 6, 2026