CVE-2026-17540

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

The File Manager WordPress plugin before 6.9.1 does not properly authorise its file management commands, allowing any authenticated user, such as a subscriber, to read and delete arbitrary files under the WordPress installation directory, which could lead to the disclosure of the site's configuration secrets and to denial of service.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 11, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Bit File Manager < 6.9.1 – Subscriber+ Arbitrary File Read and Deletion via Connector Command Request-Source Mismatch | CVE 2026-17540 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/096cb7df-26a5-4f5f-bbec-725e063a2b75/

Vendor Advisories for CVE-2026-17540(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 46× 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. 2026-08-21 00:52 UTCEG score recompute
  2. 2026-08-21 00:52 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 12:39 UTCGHSA enrichment
  5. 2026-08-20 00:28 UTCEG score recompute
  6. 2026-08-20 00:28 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 12:16 UTCGHSA enrichment
  9. 2026-08-19 00:05 UTCEG score recompute
  10. 2026-08-19 00:05 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 11:49 UTCGHSA enrichment
  13. 2026-08-17 23:38 UTCEG score recompute
  14. 2026-08-17 23:38 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 11:26 UTCGHSA enrichment
  17. 2026-08-16 23:15 UTCEG score recompute
  18. 2026-08-16 23:15 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 11:03 UTCEG score recompute
  21. 2026-08-16 11:03 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 22:52 UTCGHSA enrichment
  24. 2026-08-15 10:40 UTCEG score recompute
  25. 2026-08-15 10:40 UTCGHSA enrichment
Show 21 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 22:28 UTCGHSA enrichment
  3. 2026-08-14 10:17 UTCGHSA enrichment
  4. 2026-08-13 22:05 UTCEG score recompute
  5. 2026-08-13 22:05 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 09:53 UTCGHSA enrichment
  8. 2026-08-12 21:42 UTCEG score recompute
  9. 2026-08-12 21:42 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 09:31 UTCEG score recompute
  12. 2026-08-12 09:31 UTCGHSA enrichment
  13. 2026-08-11 21:19 UTCGHSA enrichment
  14. 2026-08-11 20:30 UTCEG score recompute▲ 8.80
  15. 2026-08-11 20:30 UTCGHSA enrichment
  16. 2026-08-11 20:30 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  17. 2026-08-11 13:42 UTCEPSS rescore
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 07:19 UTCNVD update
  20. 2026-08-10 06:42 UTCEG score recompute
  21. 2026-08-10 06:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17540?
CVE-2026-17540 is a high vulnerability published on August 10, 2026. The File Manager WordPress plugin before 6.9.1 does not properly authorise its file management commands, allowing any authenticated user, such as a subscriber, to read and delete arbitrary files under the WordPress installation directory, which could lead to the disclosure of the site's…
When was CVE-2026-17540 disclosed?
CVE-2026-17540 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17540 actively exploited?
CVE-2026-17540 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 78.3% of all scored CVEs.
What is the CVSS score of CVE-2026-17540?
CVE-2026-17540 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17540?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17540, 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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