CVE-2026-54907

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the user role without administrator approval. The user role cannot view or modify proxy data, so the direct impact is limited to unauthorized creation of low-privilege accounts. The fixed configuration in src/lib/config.ts and src/lib/auth-server.ts requires AUTH_ALLOW_SELF_REGISTRATION=true before the authentication library's disableSignUp control permits sign-up. This issue is fixed in version 1.5.1.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Sep 17, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v1.5.1

Patch available: fuomag9/caddy-proxy-manager v1.5.1

https://github.com/fuomag9/caddy-proxy-manager/releases/tag/v1.5.1
github_commit Patch Available

commit ed6d04f0d80a (fuomag9/caddy-proxy-manager)

Patch available: fuomag9/caddy-proxy-manager v1.5.1 (contains commit ed6d04f0d80a)

https://github.com/fuomag9/caddy-proxy-manager/commit/ed6d04f0d80a9c4c234e83e11af6fe635ce117cc
github Patch Available

Registrations enabled by default allows creating users with "user" permission · Advisory · fuomag9/caddy-proxy-manager · GitHub

https://github.com/fuomag9/caddy-proxy-manager/security/advisories/GHSA-4wcc-gwxr-gc9p

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 18:33 UTCEG score recompute
  2. 2026-09-18 20:34 UTCEG score recompute
  3. 2026-09-18 20:10 UTCEG score recompute
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-17 21:20 UTCEG score recompute
  6. 2026-09-17 20:45 UTCEG score recompute
  7. 2026-09-17 20:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-54907?
CVE-2026-54907 is a medium vulnerability published on September 17, 2026. Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the…
When was CVE-2026-54907 disclosed?
CVE-2026-54907 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54907 actively exploited?
CVE-2026-54907 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54907?
CVE-2026-54907 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-54907?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54907, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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