CVE-2026-13158

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM 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(medium)
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
28%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 26, 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 19× in last 7d / 91× 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.

Showing the most recent 100 of 166 total refreshes for this CVE.

  1. 2026-09-20 21:12 UTCEG score recompute
  2. 2026-09-20 21:12 UTCGHSA enrichment
  3. 2026-09-20 20:15 UTCEPSS rescore
  4. 2026-09-19 23:41 UTCEG score recompute
  5. 2026-09-19 23:41 UTCGHSA enrichment
  6. 2026-09-19 03:58 UTCEG score recompute
  7. 2026-09-19 03:58 UTCGHSA enrichment
  8. 2026-09-18 19:27 UTCEPSS rescore
  9. 2026-09-18 14:51 UTCGHSA enrichment
  10. 2026-09-18 01:15 UTCEG score recompute
  11. 2026-09-18 01:15 UTCGHSA enrichment
  12. 2026-09-17 01:23 UTCEG score recompute
  13. 2026-09-17 01:23 UTCGHSA enrichment
  14. 2026-09-16 05:26 UTCEG score recompute
  15. 2026-09-16 05:26 UTCGHSA enrichment
  16. 2026-09-16 05:14 UTCEPSS rescore
  17. 2026-09-15 04:32 UTCEG score recompute
  18. 2026-09-15 04:32 UTCGHSA enrichment
  19. 2026-09-14 14:56 UTCGHSA enrichment
  20. 2026-09-14 01:52 UTCEG score recompute
  21. 2026-09-14 01:52 UTCGHSA enrichment
  22. 2026-09-13 16:46 UTCEPSS rescore
  23. 2026-09-13 12:49 UTCGHSA enrichment
  24. 2026-09-12 23:46 UTCEG score recompute
  25. 2026-09-12 23:46 UTCGHSA enrichment
Show 75 more
  1. 2026-09-12 15:00 UTCEPSS rescore
  2. 2026-09-12 10:08 UTCGHSA enrichment
  3. 2026-09-11 21:04 UTCEG score recompute
  4. 2026-09-11 21:04 UTCGHSA enrichment
  5. 2026-09-11 14:52 UTCEPSS rescore
  6. 2026-09-11 09:36 UTCEPSS rescore
  7. 2026-09-11 08:00 UTCGHSA enrichment
  8. 2026-09-10 18:54 UTCEG score recompute
  9. 2026-09-10 18:54 UTCGHSA enrichment
  10. 2026-09-10 09:34 UTCEPSS rescore
  11. 2026-09-10 03:19 UTCGHSA enrichment
  12. 2026-09-09 07:01 UTCEG score recompute
  13. 2026-09-09 07:00 UTCGHSA enrichment
  14. 2026-09-08 22:00 UTCEPSS rescore
  15. 2026-09-07 19:22 UTCEG score recompute
  16. 2026-09-07 19:22 UTCGHSA enrichment
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-06 21:18 UTCEG score recompute
  19. 2026-09-06 21:18 UTCGHSA enrichment
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-06 08:01 UTCGHSA enrichment
  22. 2026-09-05 18:58 UTCEG score recompute
  23. 2026-09-05 18:57 UTCGHSA enrichment
  24. 2026-09-05 05:54 UTCGHSA enrichment
  25. 2026-09-04 16:51 UTCEG score recompute
  26. 2026-09-04 16:51 UTCGHSA enrichment
  27. 2026-09-04 05:06 UTCEPSS rescore
  28. 2026-09-04 03:43 UTCGHSA enrichment
  29. 2026-09-03 09:07 UTCEG score recompute
  30. 2026-09-03 09:07 UTCGHSA enrichment
  31. 2026-09-02 14:11 UTCEPSS rescore
  32. 2026-09-01 22:29 UTCEG score recompute
  33. 2026-09-01 22:29 UTCGHSA enrichment
  34. 2026-09-01 13:53 UTCEPSS rescore
  35. 2026-09-01 04:39 UTCEPSS rescore
  36. 2026-08-31 23:22 UTCEG score recompute
  37. 2026-08-31 23:22 UTCGHSA enrichment
  38. 2026-08-31 00:24 UTCEG score recompute
  39. 2026-08-31 00:24 UTCGHSA enrichment
  40. 2026-08-30 19:17 UTCEPSS rescore
  41. 2026-08-30 11:21 UTCEG score recompute
  42. 2026-08-30 11:21 UTCGHSA enrichment
  43. 2026-08-30 01:21 UTCEPSS rescore
  44. 2026-08-29 22:18 UTCEG score recompute
  45. 2026-08-29 22:18 UTCGHSA enrichment
  46. 2026-08-28 21:40 UTCEPSS rescore
  47. 2026-08-27 21:52 UTCEG score recompute
  48. 2026-08-27 21:52 UTCGHSA enrichment
  49. 2026-08-27 14:24 UTCEPSS rescore
  50. 2026-08-27 08:49 UTCGHSA enrichment
  51. 2026-08-26 17:42 UTCEG score recompute
  52. 2026-08-26 17:42 UTCGHSA enrichment
  53. 2026-08-26 13:59 UTCGHSA enrichment
  54. 2026-08-26 00:56 UTCEG score recompute
  55. 2026-08-26 00:56 UTCGHSA enrichment
  56. 2026-08-25 13:48 UTCEPSS rescore
  57. 2026-08-25 11:53 UTCGHSA enrichment
  58. 2026-08-24 22:50 UTCEG score recompute
  59. 2026-08-24 22:50 UTCGHSA enrichment
  60. 2026-08-24 09:47 UTCEG score recompute
  61. 2026-08-24 09:47 UTCGHSA enrichment
  62. 2026-08-23 20:43 UTCGHSA enrichment
  63. 2026-08-23 07:40 UTCEG score recompute
  64. 2026-08-23 07:40 UTCGHSA enrichment
  65. 2026-08-23 00:19 UTCEPSS rescore
  66. 2026-08-22 18:37 UTCGHSA enrichment
  67. 2026-08-22 05:34 UTCEG score recompute
  68. 2026-08-22 05:34 UTCGHSA enrichment
  69. 2026-08-21 23:48 UTCEPSS rescore
  70. 2026-08-21 16:31 UTCGHSA enrichment
  71. 2026-08-21 03:26 UTCEG score recompute
  72. 2026-08-21 03:26 UTCGHSA enrichment
  73. 2026-08-20 22:55 UTCEPSS rescore
  74. 2026-08-20 14:22 UTCGHSA enrichment
  75. 2026-08-20 00:11 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Related CVEs(same CWE)

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 26, 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 71.7% 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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