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CVE-2026-14670

⚠️ high
🔍 Scan for this CVE
Summary

Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS Score
8.8
High
EPSS Score
0.4
Exploit Probability
Published Date
2026-08-13
First Seen: 2026-08-14
📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 80.8% of all 349,476 vulnerabilities in our database.

#67,059
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 13, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
The PostgreSQL project thanks Hcamael 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:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)
CWE-122

📦 Affected Products 5

Vendor Product Status Affected Versions
postgresql postgresql Affected
> 14.0 < 14.24
postgresql postgresql Affected
> 15.0 < 15.19
postgresql postgresql Affected
> 16.0 < 16.15
postgresql postgresql Affected
> 17.0 < 17.11
postgresql postgresql Affected
> 18.0 < 18.5

🔗 References 1

https://www.postgresql.org/support/security/CVE-2026...
Vendor Advisory

🔗 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-2026-14666 🔶 medium 4.2 0.2 Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query ... 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
These CVEs affect the same products