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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.

PUBLISHED Reserved 2026-05-16 | Published 2026-05-17 | Updated 2026-05-18 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Use of Hard-coded Cryptographic Key

Key Management Error

Product status

5.202506.d
affected

Timeline

2026-05-16:Advisory disclosed
2026-05-16:VulDB entry created
2026-05-16:VulDB entry last update

Credits

vulnplusbot (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/364327 (VDB-364327 | Sanluan PublicCMS SafeConfigComponent.java getSignKey hard-coded key) vdb-entry technical-description

vuldb.com/vuln/364327/cti (VDB-364327 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/809917 (Submit #809917 | PublicCMS V5.202506.d Anonymous Private File Download) third-party-advisory

vulnplus-note.wetolink.com/share/PCVUlOncmwTC exploit

cve.org (CVE-2026-8739)

nvd.nist.gov (CVE-2026-8739)

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