CVE-2026-14679— PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory
Quick assessment
Affected
n/a PostgreSQL
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
PostgreSQL是PostgreSQL组织开源的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性,例如外键、触发器、视图等。 PostgreSQL 18.5之前版本、17.11之前版本、16.15之前版本、15.19之前版本和14.24之前版本存在缓冲区错误漏洞，该漏洞源于PostgreSQL参数名称匹配中的栈缓冲区溢出，对象创建者可通过OUT参数计数触发，攻击仅能写入0x0和0x1字节，可能导致未知影响。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | PostgreSQL | 18< 18.6 |
affected |
17< 17.11 |
affected | ||
16< 16.15 |
affected | ||
15< 15.19 |
affected | ||
< 14.24 |
affected |
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I. Basic Information for CVE-2026-14679
Vulnerability Information
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Vulnerability Title
PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory
Source: CVE Program / CVE List V5
Vulnerability Description
Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
PostgreSQL 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PostgreSQL是PostgreSQL组织开源的一套自由的对象关系型数据库管理系统。该系统支持大部分SQL标准并且提供了许多其他特性,例如外键、触发器、视图等。 PostgreSQL 18.5之前版本、17.11之前版本、16.15之前版本、15.19之前版本和14.24之前版本存在缓冲区错误漏洞，该漏洞源于PostgreSQL参数名称匹配中的栈缓冲区溢出，对象创建者可通过OUT参数计数触发，攻击仅能写入0x0和0x1字节，可能导致未知影响。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | PostgreSQL | 18 ~ 18.6 | - |
|
II. Public POCs for CVE-2026-14679
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-14679 (1)
Same Patch Batch · n/a · 2026-08-13 · 31 CVEs total
| CVE-2026-14680 | 8.8 HIGH | PostgreSQL type confusion via "internal" arguments |
| CVE-2026-14671 | 8.8 HIGH | PostgreSQL refint plan cache type confusion executes arbitrary code |
| CVE-2026-19385 | 8.8 HIGH | PostgreSQL pg_dump heap buffer overflow executes arbitrary code |
| CVE-2026-18408 | 8.8 HIGH | PostgreSQL psql \unrestrict lets superuser of pg_dump origin server execute arbitrary code |
| CVE-2026-16239 | 8.8 HIGH | PostgreSQL type confusion in cursor CLOSE + DECLARE executes arbitrary code |
| CVE-2026-16238 | 8.8 HIGH | PostgreSQL type confusion in pg_restore_attribute_stats() executes arbitrary code |
| CVE-2026-15742 | 8.8 HIGH | PostgreSQL fuzzystrmatch writes effectively-arbitrary addresses, via integer wraparound |
| CVE-2026-15741 | 8.8 HIGH | PostgreSQL expression deparse allows SQL injection via EXTRACT argument |
| CVE-2026-14677 | 8.8 HIGH | PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound |
| CVE-2026-14676 | 8.8 HIGH | PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code |
| CVE-2026-14670 | 8.8 HIGH | PostgreSQL plperl tied object heap buffer overflow executes arbitrary code |
| CVE-2026-14669 | 8.8 HIGH | PostgreSQL to_char heap buffer overflow executes arbitrary code |
| CVE-2026-14664 | 8.8 HIGH | PostgreSQL regexp heap buffer overflow executes arbitrary code |
| CVE-2026-14662 | 8.8 HIGH | PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound |
| CVE-2026-14668 | 8.1 HIGH | PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary |
| CVE-2026-6464 | 8.1 HIGH | PostgreSQL psql COPY FROM STDIN early failure processes data lines as psql commands |
| CVE-2026-6471 | 7.2 HIGH | PostgreSQL logical decoding can dlopen arbitrary file |
| CVE-2026-14663 | 6.5 MEDIUM | PostgreSQL pgcrypto, for OpenSSL-disabled ciphers, silently encrypts to and decrypts from |
| CVE-2026-14672 | 5.3 MEDIUM | PostgreSQL observable response discrepancy with non-default scram_iterations provides user |
| CVE-2026-14678 | 4.3 MEDIUM | PostgreSQL pg_trgm picksplit reads past end of buffer |
Showing top 20 of 31 CVEs. View all on vendor page → →
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