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CVE-2026-8739— Sanluan PublicCMS SafeConfigComponent.java getSignKey hard-coded key

CVSS 5.3 · Medium EPSS 0.03% · P8

Possible ATT&CK Techniques 1AI

T1552.004 · Private Keys

Affected Version Matrix 1

VendorProductVersion RangeStatus
SanluanPublicCMS5.202506.daffected
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I. Basic Information for CVE-2026-8739

Vulnerability Information
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Vulnerability Title
Sanluan PublicCMS SafeConfigComponent.java getSignKey hard-coded key
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Sanluan PublicCMS 5.202506.d. The affected element is the function getSignKey of the file publiccms-core/src/main/java/com/publiccms/logic/component/config/SafeConfigComponent.java. The manipulation of the argument privatefile_key results in use of hard-coded cryptographic key . The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用硬编码的密码学密钥
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
SanluanPublicCMS 5.202506.d cpe:2.3:a:publiccms:publiccms:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-8739

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III. Intelligence Information for CVE-2026-8739

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News · 1

Same Patch Batch · Sanluan · 2026-05-17 · 4 CVEs total

CVE-2026-87386.5 MEDIUMSanluan PublicCMS Trade Payment Flow TradeOrderController.java AccountGatewayComponent.pay
CVE-2026-87406.3 MEDIUMSanluan PublicCMS templateResult API TemplateResultDirective.java execute special elements
CVE-2026-87375.3 MEDIUMSanluan PublicCMS Trade Address Query TradeAddressListDirective.java execute missing authe

IV. Related Vulnerabilities

Same product: PublicCMS
Same vendor: Sanluan
Same weakness: CWE-321

V. Comments for CVE-2026-8739

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