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CVE-2026-61518— ISPConfig Authenticated SQL Injection via Remote API primary_id Parameter

Quick assessment

Affected
ispconfig ispconfig3
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.

ISPConfig 的远程 API 中存在一个经过身份验证的 SQL 注入漏洞。传递给删除和更新 API 方法的 primary_id 参数在未进行整数类型转换或未使用参数化查询绑定的情况下，被直接拼接到 SQL WHERE 子句中。内置的 SQL 注入扫描器未能阻止不带引号的布尔型攻击载荷，并且在其默认配置下也不会拒绝此类请求。任何具备单一低权限函数访问权限的远程 API 用户，均可通过盲布尔推断技术注入任意 SQL 代码，从而删除或修改控制面板数据库中所有租户的记录，并提取任意数据（包括密码哈希值和客户记录）。

CVSS 8.8 · High EPSS 0.31% · P23

Affected Version Matrix 2

VendorProduct Version RangeStatus
ispconfig ispconfig3 3.2.0≤ * affected
3.3.0≤ * affected
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I. Basic Information for CVE-2026-61518

Vulnerability Information
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Vulnerability Title
ISPConfig Authenticated SQL Injection via Remote API primary_id Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
ISPConfig contains an authenticated SQL injection vulnerability in the Remote API. The primary_id parameter passed to delete and update API methods is concatenated directly into SQL WHERE clauses without integer casting or parameterized query binding. The built-in SQL injection scanner does not block quote-free boolean payloads and does not reject requests in its default configuration. A remote API user holding any single low-privilege function permission can inject arbitrary SQL to delete or modify records across all tenants in the control panel database and extract arbitrary data via blind boolean inference, including password hashes and client records.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
ispconfig ispconfig3 3.2.0 ~ * -

II. Public POCs for CVE-2026-61518

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12317 chars
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III. Intelligence Information for CVE-2026-61518

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Vendor Advisories for CVE-2026-61518 (1)

Other References for CVE-2026-61518 (1)

IV. Related Vulnerabilities

Same vendor: ispconfig
Same weakness: CWE-89

V. Comments for CVE-2026-61518

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