CVE-2026-18322

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH 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 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 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
8.8(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
24%
KEV
Not listed

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 28× in last 7d / 66× 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 09:51 UTCGHSA enrichment
  2. 2026-08-19 21:49 UTCEG score recompute
  3. 2026-08-19 21:49 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 09:46 UTCGHSA enrichment
  6. 2026-08-18 21:43 UTCEG score recompute
  7. 2026-08-18 21:43 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 09:40 UTCGHSA enrichment
  10. 2026-08-17 21:37 UTCEG score recompute
  11. 2026-08-17 21:37 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 09:34 UTCGHSA enrichment
  14. 2026-08-16 21:32 UTCEG score recompute
  15. 2026-08-16 21:32 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 09:29 UTCEG score recompute
  18. 2026-08-16 09:29 UTCGHSA enrichment
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-15 21:27 UTCGHSA enrichment
  21. 2026-08-15 09:24 UTCEG score recompute
  22. 2026-08-15 09:24 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 21:21 UTCGHSA enrichment
  25. 2026-08-14 09:15 UTCEG score recompute
Show 41 more
  1. 2026-08-14 09:15 UTCGHSA enrichment
  2. 2026-08-13 22:00 UTCEPSS rescore
  3. 2026-08-13 21:12 UTCGHSA enrichment
  4. 2026-08-13 09:10 UTCGHSA enrichment
  5. 2026-08-12 21:07 UTCGHSA enrichment
  6. 2026-08-12 16:07 UTCEG score recompute
  7. 2026-08-12 16:07 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 04:04 UTCGHSA enrichment
  10. 2026-08-11 16:01 UTCEG score recompute
  11. 2026-08-11 16:01 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 03:58 UTCEG score recompute
  14. 2026-08-11 03:58 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 15:56 UTCGHSA enrichment
  17. 2026-08-10 03:53 UTCGHSA enrichment
  18. 2026-08-09 15:50 UTCEG score recompute
  19. 2026-08-09 15:50 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-09 03:48 UTCEG score recompute
  22. 2026-08-09 03:48 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 15:46 UTCGHSA enrichment
  25. 2026-08-08 03:43 UTCEG score recompute
  26. 2026-08-08 03:43 UTCGHSA enrichment
  27. 2026-08-07 15:40 UTCGHSA enrichment
  28. 2026-08-07 03:37 UTCGHSA enrichment
  29. 2026-08-06 15:34 UTCEG score recompute
  30. 2026-08-06 15:34 UTCGHSA enrichment
  31. 2026-08-06 13:46 UTCEPSS rescore
  32. 2026-08-06 03:31 UTCEG score recompute
  33. 2026-08-06 03:31 UTCGHSA enrichment
  34. 2026-08-05 19:17 UTCEPSS rescore
  35. 2026-08-05 15:28 UTCEG score recompute
  36. 2026-08-05 15:28 UTCGHSA enrichment
  37. 2026-08-05 14:37 UTCEG score recompute
  38. 2026-08-05 14:37 UTCGHSA enrichment
  39. 2026-08-05 06:22 UTCEG score recompute
  40. 2026-08-05 05:34 UTCEG score recompute
  41. 2026-08-05 05:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 75.8% of all scored CVEs.
What is the CVSS score of CVE-2026-18322?
CVE-2026-18322 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-18322?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18322, 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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