# CVE-2026-54103 — Government Accountability Office Electronic Protest Docketing System (EPDS)

> As of 2026-06-19, CVE-2026-54103 is a CRITICAL-severity vulnerability in Government Accountability Office Electronic Protest Docketing System (EPDS), CVSS v3.1 9.8. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-54103 as of 2026-06-19; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-06-19

## What is CVE-2026-54103?

The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) does not authenticate password change requests to the '/update-profile/N' API endpoint. A remote, unauthenticated attacker could change an arbitrary user's password.

The record classifies CVE-2026-54103 under weakness class [CWE-306](https://intel.threadlinqs.com/cwe/CWE-306). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 2 vendors, listed below. The identifier was first published 109 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-18, last modified 2026-06-19

## Is CVE-2026-54103 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

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

## How to fix CVE-2026-54103

No vendor patch reference has been recorded for CVE-2026-54103 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-54103

No threat campaign in the Threadlinqs corpus currently references CVE-2026-54103, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, GitHub Security Advisories. Last verified by Threadlinqs on 2026-06-19.

**Vulnerability database entry**

- [cve.org — vdb entry](https://www.cve.org/CVERecord?id=CVE-2026-54103)

**Issue tracking and product pages**

- [epds.gao.gov — product](https://epds.gao.gov/)
- [eds.cbca.gov — product](https://www.eds.cbca.gov/login)

**Other references**

- [raw.githubusercontent.com](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-01.json)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-54103
Full detection coverage and IOCs for threats exploiting CVE-2026-54103 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp