CVE-2026-6476
CVE-2026-6476 is a high-severity vulnerability in Postgresql with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30285
- Weakness: CWE-89
- Affected product: Postgresql
- Published:
- Last modified:
Description
SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.
Frequently asked questions
- What is CVE-2026-6476?
- SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.
- How severe is CVE-2026-6476?
- CVE-2026-6476 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-6476 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-6476?
- CVE-2026-6476 affects Postgresql. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-6476?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-6476 have an EU (EUVD) identifier?
- Yes. CVE-2026-6476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30285.
- When was CVE-2026-6476 published?
- CVE-2026-6476 was published on 2026-05-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
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