CVE-2026-14677
Last modified
CVE-2026-14677 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Postgresql | Postgresql | >= 14.0, < 14.24 |
| Postgresql | Postgresql | >= 15.0, < 15.19 |
| Postgresql | Postgresql | >= 16.0, < 16.15 |
| Postgresql | Postgresql | >= 17.0, < 17.11 |
| Postgresql | Postgresql | >= 18.0, < 18.5 |
References
- https://www.postgresql.org/support/security/CVE-2026-14677/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-14677?
How severe is CVE-2026-14677?
How do I fix CVE-2026-14677?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-1467A flaw was found in libsoup, an HTTP client library. This vu…5.3
- CVE-2026-14670Heap buffer overflow in PostgreSQL plperl return of a tied h…8.8
- CVE-2026-14671Type confusion in PostgreSQL module "refint" allows an objec…8.8
- CVE-2026-14672Observable response discrepancy in PostgreSQL SCRAM authenti…5.3
- CVE-2026-14673Untrusted search path in PostgreSQL amcheck allows a grantee…3.8
- CVE-2026-14676Heap buffer overflow in PostgreSQL pg_stat_statements allows…8.8
- CVE-2026-14678Buffer over-read in PostgreSQL pg_trgm index picksplit funct…4.3
- CVE-2026-14679Stack buffer overflow in PostgreSQL argument name matching a…8.2
- CVE-2026-1468QuickCMS is vulnerable to Cross-Site Request Forgery across …5.1
- CVE-2026-14680Type confusion with PostgreSQL "internal" data type argument…8.8
- CVE-2026-14681Improper enforcement of message integrity in PostgreSQL GSSA…4.2
- CVE-2026-14682In Bouncy Castle for Java before 1.85, Possible OOM from unb…7.5
Are you affected by CVE-2026-14677?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST