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CVE-2026-62362— PeerBanHelper: SQL injection via ${field} interpolation in MyBatis mapper for analysis endpoint

Quick assessment

Affected
PBH-BTN PeerBanHelper
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.

PeerBanHelper 通过可自定义的规则和云端规则，自动屏蔽不受欢迎、吸血（leeching）及异常的 BitTorrent 对等节点。在 5.0.0 至 9.3.15 版本中，/api/statistic/analysis/field 接口会接受已认证用户提交的构造型 field 查询参数，并将其传递给 countField 或 sumField 方法。由于 mapField() 方法在未进行任何清理的情况下直接转发未被识别的字段名称，导致这些未识别的字段名通过 ${field} 占位符被直接拼接到 SQL

CVSS 4.9 · Medium EPSS 0.27% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
PBH-BTN PeerBanHelper >= 5.0.0, < 9.3.15 affected
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I. Basic Information for CVE-2026-62362

Vulnerability Information
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Vulnerability Title
PeerBanHelper: SQL injection via ${field} interpolation in MyBatis mapper for analysis endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
PeerBanHelper automatically blocks unwanted, leeching, and abnormal BitTorrent peers using customizable and cloud rules. From 5.0.0 until 9.3.15, the /api/statistic/analysis/field endpoint accepts a crafted field query parameter from an authenticated user and passes it to countField or sumField. The mapField() method forwards unrecognized field names without sanitization, so unrecognized field names are interpolated into SQL through ${field} across the SQLite, MySQL, and PostgreSQL mappers. Successful exploitation can read all data in the PeerBanHelper database. This issue is fixed in version 9.3.15.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
PBH-BTN PeerBanHelper >= 5.0.0, < 9.3.15 -

II. Public POCs for CVE-2026-62362

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III. Intelligence Information for CVE-2026-62362

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Patches & Fixes for CVE-2026-62362 (1)

Vendor Advisories for CVE-2026-62362 (1)

Vendor Pages for CVE-2026-62362 (1)

IV. Related Vulnerabilities

Same weakness: CWE-89

V. Comments for CVE-2026-62362

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