CVE-2026-54105Network attack vector

Unauthenticated account disclosure via unchecked user_id

Published Jun 18, 2026 · Updated Jun 18, 2026

Information disclosure in GAO EPDS before 2026-02-22 and CBCA EDS before 2026-03-19 allows remote attackers to read account data. The update-profile/ API endpoint accepts an arbitrary user_id value and returns the selected account's JSON record without authenticating the request or authorizing access to that record. No account is required; disclosed fields include the associated email address, with no reported ability to change data or interrupt either service.

CVSS severity6.9
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GAO EPDS before 2026-02-22 and CBCA EDS before 2026-03-19 allows remote attackers to read account data. The update-profile/ API endpoint accepts an arbitrary user_id value and returns the selected account's JSON record without authenticating the request or authorizing access to that record. No account is required; disclosed fields include the associated email address, with no reported ability to change data or interrupt either service.

The record

CVE
CVE-2026-54105
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
U.S. Government Accountability Office
Product
Electronic Protest Docketing System
Classifications
CWE-639, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <2026-02-22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

U.S. Government Accountability Office · Electronic Protest Docketing Systemversion=0 <2026-02-22
Civilian Board of Contract Appeals · Electronic Docketing System (EDS)version=0 <2026-03-19

Published CVSS scores

5.3Cybersecurity and Infrastructure Security AgencyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9Cybersecurity and Infrastructure Security AgencyCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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