CVE-2026-6638— PostgreSQL REFRESH PUBLICATION allows SQL injection via table name
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: NVD (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 |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · n/a · 2026-05-14 · 16 CVEs total
| CVE-2026-6637 | 8.8 HIGH | PostgreSQL refint allows stack buffer overflow and SQL injection |
| CVE-2026-6477 | 8.8 HIGH | PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory |
| CVE-2026-6475 | 8.8 HIGH | PostgreSQL pg_basebackup and pg_rewind can overwrite unrelated files of origin superuser c |
| CVE-2026-6473 | 8.8 HIGH | PostgreSQL server undersizes allocations, via integer wraparound |
| 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-2026-6575 | 4.3 MEDIUM | PostgreSQL pg_restore_attribute_stats accepts values that cause query planning to read pas |
| CVE-2026-6474 | 4.3 MEDIUM | PostgreSQL timeofday() can disclose portions of server memory |
| CVE-2026-24710 | CFEngine Enterprise 3.21.8前等多个版本XSS漏洞 | |
| CVE-2026-24711 | CFEngine 权限控制缺陷 | |
| CVE-2026-24712 | CFEngine Enterprise 命令注入漏洞 | |
| CVE-2026-38740 | Foscam VD1<5.3敏感信息明文传输 | |
| CVE-2025-69443 | coleam00 Archon 0.1.0远程代码执行漏洞 |
IV. Related Vulnerabilities
Same product: PostgreSQL
- CVE-2026-6637
PostgreSQL refint allows stack buffer overflow and SQL injec - CVE-2026-6575
PostgreSQL pg_restore_attribute_stats accepts values that ca - CVE-2026-6479
PostgreSQL SSL/GSS init causes denial of service, via uncont - CVE-2026-6478
PostgreSQL discloses MD5-hashed passwords via covert timing - CVE-2026-6477
PostgreSQL libpq lo_* functions let server superuser overwri
Same vendor: n/a
- CVE-2026-6575
PostgreSQL pg_restore_attribute_stats accepts values that ca - CVE-2026-6637
PostgreSQL refint allows stack buffer overflow and SQL injec - CVE-2026-6479
PostgreSQL SSL/GSS init causes denial of service, via uncont - CVE-2026-6478
PostgreSQL discloses MD5-hashed passwords via covert timing - CVE-2026-6476
PostgreSQL pg_createsubscriber allows SQL injection via subs
Same weakness: CWE-89
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NEX-Forms – Ultimate Forms Plugin for WordPress <= 9.1.12 - - CVE-2026-42847
ClipBucket: Improper Neutralization of Special Elements used - CVE-2026-22599
Strapi Vulnerable to SQL Injection in Content Type Builder - CVE-2026-6476
PostgreSQL pg_createsubscriber allows SQL injection via subs - CVE-2025-11024
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V. Comments for CVE-2026-6638
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