CVE-2026-16605

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: Elevated riskExposed: 0

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

The MultiVendorX WordPress plugin before 5.0.11 does not verify that the store targeted through its REST API belongs to the requesting vendor, allowing an authenticated vendor (Store Owner and above) to view, take over, permanently delete, or modify any other vendor's store on the marketplace.

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
48(Track*)
EG Risk 48/100SSVC: 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
Severity72% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 5, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

MultiVendorX < 5.0.11 – Store Owner+ Cross-Vendor Store Takeover and Deletion via Missing Authorization | CVE 2026-16605 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/e31c9bf0-7340-4bd7-ad6e-6ad01737654a/

Vendor Advisories for CVE-2026-16605(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 27× in last 7d / 63× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 16:05 UTCGHSA enrichment
  3. 2026-08-20 03:23 UTCEG score recompute
  4. 2026-08-20 03:23 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-19 14:39 UTCGHSA enrichment
  7. 2026-08-19 01:45 UTCEG score recompute
  8. 2026-08-19 01:45 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 13:02 UTCGHSA enrichment
  11. 2026-08-18 00:18 UTCEG score recompute
  12. 2026-08-18 00:18 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 11:35 UTCGHSA enrichment
  15. 2026-08-16 22:54 UTCEG score recompute
  16. 2026-08-16 22:54 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 10:12 UTCEG score recompute
  19. 2026-08-16 10:12 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 21:32 UTCGHSA enrichment
  22. 2026-08-15 08:51 UTCEG score recompute
  23. 2026-08-15 08:51 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 20:09 UTCGHSA enrichment
Show 38 more
  1. 2026-08-14 07:28 UTCEG score recompute
  2. 2026-08-14 07:28 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 18:47 UTCGHSA enrichment
  5. 2026-08-13 06:07 UTCGHSA enrichment
  6. 2026-08-12 17:26 UTCEG score recompute
  7. 2026-08-12 17:26 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 04:45 UTCGHSA enrichment
  10. 2026-08-11 16:04 UTCEG score recompute
  11. 2026-08-11 16:04 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 03:23 UTCEG score recompute
  14. 2026-08-11 03:23 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 14:42 UTCGHSA enrichment
  17. 2026-08-10 02:00 UTCEG score recompute
  18. 2026-08-10 02:00 UTCGHSA enrichment
  19. 2026-08-09 13:46 UTCEPSS rescore
  20. 2026-08-09 13:19 UTCGHSA enrichment
  21. 2026-08-09 00:39 UTCGHSA enrichment
  22. 2026-08-08 11:58 UTCGHSA enrichment
  23. 2026-08-07 23:17 UTCEG score recompute
  24. 2026-08-07 23:17 UTCGHSA enrichment
  25. 2026-08-07 10:36 UTCGHSA enrichment
  26. 2026-08-06 21:55 UTCEG score recompute
  27. 2026-08-06 21:55 UTCGHSA enrichment
  28. 2026-08-06 13:46 UTCEPSS rescore
  29. 2026-08-06 09:14 UTCEG score recompute
  30. 2026-08-06 09:14 UTCGHSA enrichment
  31. 2026-08-05 20:33 UTCGHSA enrichment
  32. 2026-08-05 20:15 UTCEG score recompute▲ 7.20
  33. 2026-08-05 20:15 UTCGHSA enrichment
  34. 2026-08-05 20:15 UTCMITRE cvelistV5CVSS v3 → 7.2 · severity → HIGH
  35. 2026-08-05 19:17 UTCEPSS rescore
  36. 2026-08-05 07:19 UTCNVD update
  37. 2026-08-05 06:20 UTCEG score recompute
  38. 2026-08-05 06:20 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16605?
CVE-2026-16605 is a high vulnerability published on August 5, 2026. The MultiVendorX WordPress plugin before 5.0.11 does not verify that the store targeted through its REST API belongs to the requesting vendor, allowing an authenticated vendor (Store Owner and above) to view, take over, permanently delete, or modify any other vendor's store on the marketplace.
When was CVE-2026-16605 disclosed?
CVE-2026-16605 was first published in the National Vulnerability Database on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16605 actively exploited?
CVE-2026-16605 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 75.5% of all scored CVEs.
What is the CVSS score of CVE-2026-16605?
CVE-2026-16605 has a CVSS v3.1 base score of 7.2 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16605?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16605, 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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