CVE-2026-9617: PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a t

Routine

MEDIUM 6.8DOWNGRADE

CVE-2026-9617 is a medium-severity flaw (CVSS 6.8) affecting anonymizer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a table and placing malicious code inside a column identifier. If a superuser calls the k-anonymity function, the malicious code is executed with superuser privileges. The risk is higher with PostgreSQL 14 or with instances upgraded from PostgreSQL 14 or a prior version. With PostgreSQL 15 and later, the creation permission on the public sch

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-05-27
Last modified	2026-10-26

Publisher (CNA): PostgreSQL · Vendor: dalibo

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-27 14:17 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

dalibo anonymizer DOWNGRADE

Affected: 2.5.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5.1

1. Check installed version

apt-cache policy anonymizer || rpm -q anonymizer || anonymizer --version

2. No fixed release: DOWNGRADE to a release before 2.5.1 (Debian / Ubuntu)

apt-cache madison anonymizer sudo apt install anonymizer=<VERSION_BEFORE_2.5.1> sudo apt-mark hold anonymizer

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list anonymizer sudo dnf downgrade anonymizer-<VERSION_BEFORE_2.5.1> sudo dnf versionlock add anonymizer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-9617?

anonymizer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-9617 being exploited?

CVE-2026-9617 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-9617 affect?

CVE-2026-9617 affects anonymizer. Severity is medium (CVSS 6.8). PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a table and placing malicious code inside a column identifier. If a superuser calls the k-anonymity function, the malicious code is e

How urgent is CVE-2026-9617?

Priority 33/100. Public exploit reference

Software pages

PostgreSQL vulnerabilities

References

← Back to latest CVEs