CVE-2026-84839Public exploitNetwork attack vectorHinoki check available

Information disclosure via API-only authentication filter

Published Sep 2, 2026 · Updated Sep 3, 2026

Missing authentication in TSI Coop TSI DPDP CMS 0.5.0 and earlier allows remote attackers to read administrative console source. The web.xml mapping applies the sole server-side authentication filter only to /api/*, leaving 17 static admin and DPO pages protected solely by a post-delivery JavaScript redirect. No credentials or user interaction are required; API calls remain authenticated, so exposure is limited to page source, endpoint paths, request schemas, and routing logic.

CVSS severity6.9
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authentication in TSI Coop TSI DPDP CMS 0.5.0 and earlier allows remote attackers to read administrative console source. The web.xml mapping applies the sole server-side authentication filter only to /api/*, leaving 17 static admin and DPO pages protected solely by a post-delivery JavaScript redirect. No credentials or user interaction are required; API calls remain authenticated, so exposure is limited to page source, endpoint paths, request schemas, and routing logic.

The record

CVE
CVE-2026-84839
Published
Sep 2, 2026
Updated
Sep 3, 2026
Vendor
TSI Coop
Product
TSI DPDP CMS
Classifications
CWE-306, CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1
  2. Affected versionversion=0.2
  3. Affected versionversion=0.3
  4. Affected versionversion=0.4
  5. Affected versionversion=0.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TSI Coop · TSI DPDP CMSversion=0.1; version=0.2; version=0.3; version=0.4; version=0.5.0

Published CVSS scores

5.5VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.0VulDB CNAAV:N/AC:L/Au:N/C:P/I:N/A:N
4.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
4.8VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
5.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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