CVE-2026-14681— PostgreSQL improper enforcement of GSSAPI encryption when coupled with SSL
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | PostgreSQL | 18< 18.5 | affected |
17< 17.11 | affected |
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I. Basic Information for CVE-2026-14681
Vulnerability Information
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Vulnerability Title
PostgreSQL improper enforcement of GSSAPI encryption when coupled with SSL
Source: CVE Program / CVE List V5
Vulnerability Description
Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pg_hba.conf rules, via initial direct TLS connection. Despite a pg_hba.conf that appears to require GSSAPI, the connection may exchange data over TLS encryption alone. If the TLS settings are more permissive than the GSS settings, the connection may continue with lesser protection. Within major versions 17-18, minor versions before PostgreSQL 18.5 and 17.11 are affected. Versions before PostgreSQL 17 are unaffected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通信信道中传输过程中消息完整性的不正确执行
Source: CVE Program / CVE List V5
Vulnerability Title
PostgreSQL 加密问题漏洞
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之前版本和PostgreSQL 17.11之前版本存在加密问题漏洞，该漏洞源于GSSAPI对消息完整性执行不当，可能允许用户通过初始直接TLS连接违反pg_hba.conf规则协商GSSAPI，导致连接仅使用TLS加密交换数据，若TLS设置比GSS设置更宽松，连接可能继续使用较弱的保护。
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 ~ 18.5 | - |
II. Public POCs for CVE-2026-14681
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-14681 (1)
Same Patch Batch · n/a · 2026-08-13 · 31 CVEs total
| CVE-2026-14671 | 8.8 HIGH | PostgreSQL refint plan cache type confusion 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-2026-14680 | 8.8 HIGH | PostgreSQL type confusion via "internal" arguments |
| CVE-2026-19385 | 8.8 HIGH | PostgreSQL pg_dump heap buffer overflow executes arbitrary code |
| 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-2026-14679 | 8.2 HIGH | PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory |
| CVE-2026-6464 | 8.1 HIGH | PostgreSQL psql COPY FROM STDIN early failure processes data lines as psql commands |
| CVE-2026-14668 | 8.1 HIGH | PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary |
| 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 |
Showing top 20 of 31 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: PostgreSQL
- CVE-2026-14671
PostgreSQL refint plan cache type confusion executes arbitra - CVE-2026-6471
PostgreSQL logical decoding can dlopen arbitrary file - CVE-2026-6469
PostgreSQL ALTER TABLE ALTER TYPE resets extended statistics - CVE-2026-6470
PostgreSQL fails to check type USAGE privilege - CVE-2026-6464
PostgreSQL psql COPY FROM STDIN early failure processes data
Same vendor: n/a
- CVE-2026-14671
PostgreSQL refint plan cache type confusion executes arbitra - CVE-2026-6471
PostgreSQL logical decoding can dlopen arbitrary file - CVE-2026-6470
PostgreSQL fails to check type USAGE privilege - CVE-2026-6469
PostgreSQL ALTER TABLE ALTER TYPE resets extended statistics - CVE-2026-6464
PostgreSQL psql COPY FROM STDIN early failure processes data
Same weakness: CWE-924
- CVE-2026-13584
Information tampering and Denial-of-service (DoS) vulnerabil - CVE-2026-54891
Plaintext APPLICATION_DATA injected during TLS handshake del - CVE-2026-12576
DVP80ES3 Improper Enforcement of Message Integrity During Tr - CVE-2019-25719
Dräger Infinity M540 VG4.1.1 Spoofing and DoS via Network Me - CVE-2025-29628
Gardyn 4 安全漏洞
V. Comments for CVE-2026-14681
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