Skip to content
Fencer Vulns
high 8.8

CVE-2026-54104 json

U.S. GAO EPDS and CBCA EDS client-based privilege escalation

published 2026-06-18 4 mo ago modified 2026-06-22 4 mo ago also EUVD-2026-37911

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) trusts client-provided values for the 'epds_role_id' parameter without verification, allowing a remote, authenticated attacker to escalate their own privileges.

Patch / fix

  • Government Accountability Office Electronic Protest Docketing System (EPDS) 2026-02-22
  • Civilian Board of Contract Appeals Electronic Docketing System (EDS) 2026-03-19

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa vex VA-26-169-01 updated cvss 8.8

U.S. GAO EPDS and CBCA EDS multiple vulnerabilities

  • Civilian Board of Contract Appeals Electronic Docketing System (EDS) <2026-03-19 Government Accountability Office Electronic Protest Docketing System (EPDS) <2026-02-22
    affected: vendor fix
  • Civilian Board of Contract Appeals Electronic Docketing System (EDS) 2026-03-19 Government Accountability Office Electronic Protest Docketing System (EPDS) 2026-02-22
    fixed: vendor fix

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Government Accountability Office Electronic Protest Docketing System (EPDS)
  • Civilian Board of Contract Appeals Electronic Docketing System (EDS)

Classification

Weakness
  • CWE-602 Client-Side Enforcement of Server-Side Security

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.