Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-17347— pgAdmin 4: OS command injection in MASTER_PASSWORD_HOOK via untrusted username substitution

Quick assessment

Affected
pgadmin.org pgAdmin 4
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pgAdmin是pgAdmin组织开源的一个用于开源数据库 PostgreSQL 的开源管理和开发平台。 pgAdmin 7.2版本至9.17之前版本存在命令注入漏洞，该漏洞源于MASTER_PASSWORD_HOOK设置中，管理员配置的外部命令将%u替换为当前用户名时，未对用户名进行安全处理，直接拼接到命令字符串并通过shell执行，可能导致经过身份验证的攻击者以pgAdmin服务账户执行任意命令。

CVSS 7.5 · High EPSS 0.72% · P52

Affected Version Matrix 1

VendorProduct Version RangeStatus
pgadmin.org pgAdmin 4 7.2< 9.17 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-17347

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
pgAdmin 4: OS command injection in MASTER_PASSWORD_HOOK via untrusted username substitution
Source: CVE Program / CVE List V5
Vulnerability Description
The MASTER_PASSWORD_HOOK setting, introduced in pgAdmin 4 7.2, lets an administrator configure an external command that returns a per-user encryption key, with %u in the configured string replaced by the current user's name. The previous implementation substituted the username directly into the command string and executed the result with subprocess.Popen(..., shell=True). Because the username can originate from an external authentication source (OAuth/OIDC claims, Kerberos, webserver auth) rather than a value pgAdmin fully controls, a username containing shell metacharacters (';', '$()', backticks, pipes, '&&', newlines) allowed an authenticated user to execute arbitrary commands as the pgAdmin service account in any deployment where the configured hook string uses %u. Fix tokenises the trusted, administrator-configured hook string into an argument vector first (using shlex in POSIX-quoting mode, with backslash-escaping disabled so Windows-style paths are not mis-parsed), substitutes the untrusted username into the individual argv elements, and executes with shell=False. The username is therefore always confined to a single argv element; any shell metacharacters it contains are inert. Administrators whose MASTER_PASSWORD_HOOK previously relied on shell features (pipes, redirection, environment-variable expansion, globbing) within the hook string itself must move that logic into the invoked script, since it is no longer interpreted by a shell. This issue affects pgAdmin 4: from 7.2 before 9.17.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
pgAdmin 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pgAdmin是pgAdmin组织开源的一个用于开源数据库 PostgreSQL 的开源管理和开发平台。 pgAdmin 7.2版本至9.17之前版本存在命令注入漏洞，该漏洞源于MASTER_PASSWORD_HOOK设置中，管理员配置的外部命令将%u替换为当前用户名时，未对用户名进行安全处理，直接拼接到命令字符串并通过shell执行，可能导致经过身份验证的攻击者以pgAdmin服务账户执行任意命令。
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
pgadmin.org pgAdmin 4 7.2 ~ 9.17 -

II. Public POCs for CVE-2026-17347

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11821 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-17347

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-17347 (2)

Vendor Advisories for CVE-2026-17347 (1)

Same Patch Batch · pgadmin.org · 2026-07-31 · 7 CVEs total

CVE-2026-17566 9.9 CRITICAL pgAdmin 4: RCE via backslash-escape mismatch in Import/Export Data query guard (incomplete
CVE-2026-17349 9.6 CRITICAL pgAdmin 4: Adhoc server clone leaks another user's stored database credentials and ownersh
CVE-2026-17351 9.0 CRITICAL pgAdmin 4: AI Assistant read-only transaction bypass via sqlparse/PostgreSQL lexer disagre
CVE-2026-17346 8.8 HIGH pgAdmin 4: SQL injection via unescaped object names in index Statistics and publication/su
CVE-2026-17348 6.5 MEDIUM pgAdmin 4: Missing authentication decorator on Constraints, preferences, Debugger and Sche
CVE-2026-17350 5.4 MEDIUM pgAdmin 4: Tool permission bypass via backend routes and Socket.IO handlers

IV. Related Vulnerabilities

Same product: pgAdmin 4
Same vendor: pgadmin.org
Same weakness: CWE-78

V. Comments for CVE-2026-17347

No comments yet

Leave a comment