CVE-2026-18322

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

The Smart Popup by Supsystic plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.12.0. This is due to a permission map collision in the havePermissions() function in classes/frame.php, where array_merge() overwrites the popup module's administrator-restricted method list with the base controller's value, silently removing save from protected actions; this is compounded by the subscription confirmation email embedding the same generic pps_nonce that the unauthenticated wp_ajax_nopriv_save endpoint accepts, and by the complete absence of any server-side role allowlist in createWpSubscriber(). This makes it possible for unauthenticated attackers to submit a crafted POST request to admin-ajax.php using a nonce obtained from a public subscription confirmation email, setting params[tpl][sub_wp_create_user_role] to administrator via the exposed popupControllerPps::save() action, and then triggering the stored confirmation flow to create a persistent WordPress Administrator account with attacker-chosen credentials.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

August 12, 2026

References (7)

Vendor Advisories for CVE-2026-18322(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 / 84× 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 203 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-18322?
CVE-2026-18322 is a high vulnerability published on August 5, 2026. The Smart Popup by Supsystic plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.12.0. This is due to a permission map collision in the havePermissions() function in classes/frame.php, where arraymerge() overwrites the popup module's…
When was CVE-2026-18322 disclosed?
CVE-2026-18322 was first published on August 5, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18322 actively exploited?
CVE-2026-18322 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18322?
CVE-2026-18322 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18322?
No fix for CVE-2026-18322 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18322 are linked in the Vendor Advisories panel on this page.

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