CVE-2026-2006: PostgreSQL missing validation of multibyte character length executes arbitrary code
Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.8 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.12 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.16 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.21
Event History
Frequently Asked Questions
What is the severity of CVE-2026-2006?
CVE-2026-2006 is considered a high-severity vulnerability due to the potential for arbitrary code execution.
How do I fix CVE-2026-2006?
To fix CVE-2026-2006, you should update PostgreSQL to the latest version where the vulnerability is patched.
What versions of PostgreSQL are affected by CVE-2026-2006?
CVE-2026-2006 affects PostgreSQL versions up to 18.2, 17.8, 16.12, 15.16, and 14.21.
What are the potential risks associated with CVE-2026-2006?
The potential risks of CVE-2026-2006 include unauthorized access and the ability to execute arbitrary code on the database server.
Who can exploit CVE-2026-2006?
CVE-2026-2006 can be exploited by any authenticated database user capable of issuing specially crafted queries.