CVE-2026-13158

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-01. 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 Everest Toolkit WordPress plugin through 1.2.3 does not validate the type of files uploaded during demo-content import (the WordPress file-type test is disabled), allowing high-privilege users (Administrator by default, including non-super-admin site administrators on multisite) to upload executable PHP files to the uploads directory.

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
20%
KEV
Not listed

Published

August 1, 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

Everest Toolkit <= 1.2.3 – Admin+ Arbitrary File Upload | CVE 2026-13158 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/f101071f-402a-40a2-bbdb-666512cd4049/

Vendor Advisories for CVE-2026-13158(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 26× in last 7d / 71× 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 03:26 UTCEG score recompute
  2. 2026-08-21 03:26 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 14:22 UTCGHSA enrichment
  5. 2026-08-20 00:11 UTCEG score recompute
  6. 2026-08-20 00:11 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 11:06 UTCGHSA enrichment
  9. 2026-08-18 22:02 UTCEG score recompute
  10. 2026-08-18 22:02 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 08:57 UTCGHSA enrichment
  13. 2026-08-17 19:53 UTCEG score recompute
  14. 2026-08-17 19:53 UTCGHSA enrichment
  15. 2026-08-17 06:49 UTCGHSA enrichment
  16. 2026-08-16 17:46 UTCEG score recompute
  17. 2026-08-16 17:46 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 04:43 UTCEG score recompute
  20. 2026-08-16 04:43 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 15:40 UTCGHSA enrichment
  23. 2026-08-15 02:36 UTCEG score recompute
  24. 2026-08-15 02:36 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 46 more
  1. 2026-08-14 13:33 UTCGHSA enrichment
  2. 2026-08-14 00:30 UTCEG score recompute
  3. 2026-08-14 00:30 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 11:26 UTCGHSA enrichment
  6. 2026-08-12 22:23 UTCEG score recompute
  7. 2026-08-12 22:23 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 09:19 UTCGHSA enrichment
  10. 2026-08-11 20:16 UTCEG score recompute
  11. 2026-08-11 20:16 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 07:13 UTCEG score recompute
  14. 2026-08-11 07:13 UTCGHSA enrichment
  15. 2026-08-10 23:59 UTCEPSS rescore
  16. 2026-08-10 18:10 UTCGHSA enrichment
  17. 2026-08-10 05:07 UTCGHSA enrichment
  18. 2026-08-09 16:04 UTCEG score recompute
  19. 2026-08-09 16:04 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-09 03:01 UTCEG score recompute
  22. 2026-08-09 03:01 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 13:58 UTCGHSA enrichment
  25. 2026-08-08 00:54 UTCEG score recompute
  26. 2026-08-08 00:54 UTCGHSA enrichment
  27. 2026-08-07 11:51 UTCGHSA enrichment
  28. 2026-08-06 22:48 UTCEG score recompute
  29. 2026-08-06 22:48 UTCGHSA enrichment
  30. 2026-08-06 13:46 UTCEPSS rescore
  31. 2026-08-06 09:37 UTCEG score recompute
  32. 2026-08-06 09:37 UTCGHSA enrichment
  33. 2026-08-05 20:34 UTCGHSA enrichment
  34. 2026-08-05 20:15 UTCEG score recompute▲ 7.20
  35. 2026-08-05 20:15 UTCGHSA enrichment
  36. 2026-08-05 20:15 UTCMITRE cvelistV5CVSS v3 → 7.2 · severity → HIGH
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-04 15:09 UTCEPSS rescore
  39. 2026-08-04 10:38 UTCEPSS rescore
  40. 2026-08-04 01:23 UTCEG score recompute
  41. 2026-08-04 01:23 UTCGHSA enrichment
  42. 2026-08-03 10:35 UTCEPSS rescore
  43. 2026-08-02 02:26 UTCEPSS rescore
  44. 2026-08-01 07:22 UTCNVD update
  45. 2026-08-01 06:45 UTCEG score recompute
  46. 2026-08-01 06:42 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-13158?
CVE-2026-13158 is a high vulnerability published on August 1, 2026. The Everest Toolkit WordPress plugin through 1.2.3 does not validate the type of files uploaded during demo-content import (the WordPress file-type test is disabled), allowing high-privilege users (Administrator by default, including non-super-admin site administrators on multisite) to upload…
When was CVE-2026-13158 disclosed?
CVE-2026-13158 was first published in the National Vulnerability Database on August 1, 2026, with the most recent update 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-2026-13158 actively exploited?
CVE-2026-13158 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 79.7% of all scored CVEs.
What is the CVSS score of CVE-2026-13158?
CVE-2026-13158 has a CVSS v3.1 base score of 7.2 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-13158?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13158, 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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