CVE-2026-6638
âšī¸ lowSummary
SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.
CVSS Score
3.7
Low
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-14
First Seen: 2026-05-17
đ Relative Risk Intelligence
This CVE is Lower Risk - more severe than 3.9% of all 349,494 vulnerabilities in our database.
#335,912
Below average severity
Severity Percentile
đ¯ CISA SSVC Assessment Updated: May 14, 2026
đ Exploitation Status
None
No known exploits
âī¸ Automatable
NO
Requires human interaction
đĨ Technical Impact
Partial
Limited system impact
đ Discovered By
The PostgreSQL project thanks Pavel Kohout, Aisle Research for reporting this problem.
SSVC data provided by
CISA
Last Modified
2026-05-18
Source
NVD đ
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
CWE IDs (Weakness Types)