CVE-2026-6464Network attack vector

Client command execution via failed COPY handling

Published Aug 13, 2026 · Updated Aug 13, 2026

Command injection in PostgreSQL psql before 18.6, 17.11, 16.15, 15.19, and 14.24 allows attackers to execute psql commands. When a scripted COPY FROM STDIN fails before PGRES_COPY_IN, psql mistakes subsequent inline data for SQL or backslash meta-commands instead of skipping it. Exploitation requires control of both a server that triggers the early error and the script's data rows, or control of the rows plus a coincidental early error.

CVSS severity8.1
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in PostgreSQL psql before 18.6, 17.11, 16.15, 15.19, and 14.24 allows attackers to execute psql commands. When a scripted COPY FROM STDIN fails before PGRES_COPY_IN, psql mistakes subsequent inline data for SQL or backslash meta-commands instead of skipping it. Exploitation requires control of both a server that triggers the early error and the script's data rows, or control of the rows plus a coincidental early error.

The record

CVE
CVE-2026-6464
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
PostgreSQL Global Development Group
Product
PostgreSQL
Classifications
CWE-829, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <14.24
  2. Affected versionversion=15 <15.19
  3. Affected versionversion=16 <16.15
  4. Affected versionversion=17 <17.11
  5. Affected versionversion=18 <18.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PostgreSQL Global Development Group · PostgreSQLversion=0 <14.24; version=15 <15.19; version=16 <16.15; version=17 <17.11; version=18 <18.5

Published CVSS scores

8.1PostgreSQLCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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