CVE-2026-6638— PostgreSQL REFRESH PUBLICATION allows SQL injection via table name
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 18.4之前版本、17.10之前版本和16.14之前版本存在SQL注入漏洞，该漏洞源于逻辑复制ALTER SUBSCRIPTION ... REFRESH PUBLICATION存在SQL注入，可能导致订阅表创建者以订阅的发布端凭据执行任意SQL。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | PostgreSQL | 18< 18.4 |
affected |
17< 17.10 |
affected | ||
16< 16.14 |
affected |
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I. Basic Information for CVE-2026-6638
Vulnerability Information
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Vulnerability Title
PostgreSQL REFRESH PUBLICATION allows SQL injection via table name
Source: CVE Program / CVE List V5
Vulnerability Description
SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
PostgreSQL SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PostgreSQL是PostgreSQL组织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 18.4之前版本、17.10之前版本和16.14之前版本存在SQL注入漏洞，该漏洞源于逻辑复制ALTER SUBSCRIPTION ... REFRESH PUBLICATION存在SQL注入，可能导致订阅表创建者以订阅的发布端凭据执行任意SQL。
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 ~ 18.4 | - |
|
II. Public POCs for CVE-2026-6638
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-6638 (1)
Same Patch Batch · n/a · 2026-05-14 · 16 CVEs total
| CVE-2026-6473 | 8.8 HIGH | PostgreSQL server undersizes allocations, via integer wraparound |
| CVE-2026-6475 | 8.8 HIGH | PostgreSQL pg_basebackup and pg_rewind can overwrite unrelated files of origin superuser c |
| CVE-2026-6477 | 8.8 HIGH | PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory |
| CVE-2026-6637 | 8.8 HIGH | PostgreSQL refint allows stack buffer overflow and SQL injection |
| CVE-2026-6479 | 7.5 HIGH | PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion |
| CVE-2026-6476 | 7.2 HIGH | PostgreSQL pg_createsubscriber allows SQL injection via subscription name |
| CVE-2026-6478 | 6.5 MEDIUM | PostgreSQL discloses MD5-hashed passwords via covert timing channel |
| CVE-2026-6472 | 5.4 MEDIUM | PostgreSQL CREATE TYPE does not check multirange schema CREATE privilege |
| CVE-2026-6474 | 4.3 MEDIUM | PostgreSQL timeofday() can disclose portions of server memory |
| CVE-2026-6575 | 4.3 MEDIUM | PostgreSQL pg_restore_attribute_stats accepts values that cause query planning to read pas |
| CVE-2026-24710 | Northern.tech CFEngine Enterprise 跨站脚本漏洞 | |
| CVE-2026-24711 | Northern.tech CFEngine Enterprise 安全漏洞 | |
| CVE-2026-24712 | Northern.tech CFEngine 安全漏洞 | |
| CVE-2026-38740 | Foscam VD1 Video Doorbell 安全漏洞 | |
| CVE-2025-69443 | Archon 安全漏洞 |
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V. Comments for CVE-2026-6638
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