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CVE-2026-14666

🔶 medium
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Summary

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a part

Description

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS Score
4.2
Medium
EPSS Score
0.2
Exploit Probability
Published Date
2026-08-13
First Seen: 2026-08-14
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 5.3% of all 349,476 vulnerabilities in our database.

#330,827
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 13, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
The PostgreSQL project thanks Staroverov Ilja and Shinya Kato for reporting this problem.
SSVC data provided by CISA
Last Modified 2026-08-19
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE IDs (Weakness Types)

📦 Affected Products 5

🔗 References 1

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-14662 ⚠️ high 8.8 0.5 Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause ... 2026-08-13
CVE-2026-14663 🔶 medium 6.5 0.1 Cleartext storage in PostgreSQL pgcrypto disabled ciphers allows a user to recover cleartext, via direct observation of ... 2026-08-13
CVE-2026-14664 ⚠️ high 8.8 0.4 Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user... 2026-08-13
CVE-2026-14668 ⚠️ high 8.1 0.3 Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a cal... 2026-08-13
CVE-2026-14669 ⚠️ high 8.8 0.6 Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code... 2026-08-13
CVE-2026-14670 ⚠️ high 8.8 0.4 Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as t... 2026-08-13
These CVEs affect the same products