CVE-2026-54166

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% 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
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Shelf is a platform for tracking physical assets. Prior to version 1.20.3, authenticated users with the asset:import permission can trigger server-side HTTP requests to attacker-controlled URLs through the Asset CSV Content Import feature. The imageUrl validation logic can be bypassed through multiple techniques, including image-extension suffixes, image-related path keywords, domain substring matching, and redirect chains. After validation, the server performs an unrestricted fetch() request to the supplied URL. This results in a Server-Side Request Forgery (SSRF) vulnerability that allows attackers to reach internal network services, cloud metadata endpoints, and arbitrary external hosts from the application's network context. Additionally, response bodies are fully buffered before size validation, creating a potential memory exhaustion vector. Version 1.20.3 patches the issue.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Server-Side Request Forgery (SSRF) via Asset CSV Import imageUrl Validation Bypass · Advisory · Shelf-nu/shelf.nu · GitHub

https://github.com/Shelf-nu/shelf.nu/security/advisories/GHSA-xgrm-8w6v-mvjg

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 20× 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. 2026-09-21 03:14 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-19 17:04 UTCEG score recompute
  4. 2026-09-19 05:42 UTCEG score recompute
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 19:37 UTCEG score recompute
  7. 2026-09-17 19:31 UTCEPSS rescore
  8. 2026-09-16 17:59 UTCEG score recompute
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 05:36 UTCEG score recompute
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 06:44 UTCEG score recompute
  13. 2026-09-14 19:22 UTCEG score recompute
  14. 2026-09-14 18:53 UTCEG score recompute
  15. 2026-09-13 18:47 UTCEG score recompute
  16. 2026-09-13 16:47 UTCEPSS rescore
  17. 2026-09-12 20:04 UTCEG score recompute
  18. 2026-09-11 21:21 UTCEG score recompute
  19. 2026-09-11 21:14 UTCEG score recompute
  20. 2026-09-11 21:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54166?
CVE-2026-54166 is a high vulnerability published on September 11, 2026. Shelf is a platform for tracking physical assets. Prior to version 1.20.3, authenticated users with the asset:import permission can trigger server-side HTTP requests to attacker-controlled URLs through the Asset CSV Content Import feature. The imageUrl validation logic can be bypassed through…
When was CVE-2026-54166 disclosed?
CVE-2026-54166 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54166 actively exploited?
CVE-2026-54166 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 82.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54166?
CVE-2026-54166 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-54166?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54166, 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.

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