CVE-2026-9242

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-27. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: 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 RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to Authentication Bypass via Insufficient Verification of Data Authenticity in all versions up to and including 6.0.8.6. This is due to the PayPal IPN callback handler being registered as a nopriv AJAX action with no authentication or nonce requirement, and critically because the handler updates the payment log database row with attacker-controlled POST data — including payment_status and the custom field encoding the target user_id — before PayPal IPN validation is performed, meaning the database remains poisoned even when validation subsequently fails. This makes it possible for unauthenticated attackers to authenticate as any WordPress user, including administrators, by submitting a forged IPN request that overwrites a payment log entry's user_id with that of a target account, then visiting the success return URL with a legitimately obtained security hash to cause the plugin to issue real WordPress authentication cookies for the targeted account.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

Published

June 27, 2026

Last Modified

June 29, 2026

References (14)

Vendor Advisories for CVE-2026-9242(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 7× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 188 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 90 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  8. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  9. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  12. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  14. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  17. 2026-09-23 07:40 UTCEG score recompute
  18. 2026-09-23 07:40 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  19. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  20. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  21. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  22. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  23. 2026-09-18 07:06 UTCEG score recompute
  24. 2026-09-18 07:06 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  25. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 27th percentile
Show 73 more
  1. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  2. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  3. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  4. 2026-09-14 00:56 UTCEG score recompute
  5. 2026-09-14 00:56 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  6. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  7. 2026-09-12 15:19 UTCEG score recompute
  8. 2026-09-12 15:19 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  9. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  10. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  11. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  12. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  13. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  14. 2026-09-06 14:50 UTCEG score recompute
  15. 2026-09-06 14:50 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  16. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  17. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  18. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  19. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  20. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  21. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  22. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  23. 2026-08-30 19:11 UTCEG score recompute
  24. 2026-08-30 19:11 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  26. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  27. 2026-08-27 22:52 UTCEG score recompute
  28. 2026-08-27 22:52 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  30. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  32. 2026-08-24 14:19 UTCEG score recompute
  33. 2026-08-24 14:19 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  34. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  35. 2026-08-23 12:15 UTCEG score recompute
  36. 2026-08-23 12:15 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  38. 2026-08-22 10:12 UTCEG score recompute
  39. 2026-08-22 10:12 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  40. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  41. 2026-08-21 08:08 UTCEG score recompute
  42. 2026-08-21 08:08 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  43. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  44. 2026-08-20 06:05 UTCEG score recompute
  45. 2026-08-20 06:05 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  46. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  47. 2026-08-18 23:29 UTCEG score recompute
  48. 2026-08-18 23:29 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  49. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  50. 2026-08-17 15:52 UTCEG score recompute
  51. 2026-08-17 15:52 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  52. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  53. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  54. 2026-08-16 13:50 UTCEG score recompute
  55. 2026-08-16 13:50 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  56. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  57. 2026-08-15 11:48 UTCEG score recompute
  58. 2026-08-15 11:48 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  59. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-08-14 09:45 UTCEG score recompute
  61. 2026-08-14 09:45 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  62. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-08-13 07:43 UTCEG score recompute
  64. 2026-08-13 07:43 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  65. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  66. 2026-08-12 05:09 UTCEG score recompute
  67. 2026-08-12 05:09 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  68. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  69. 2026-08-11 03:06 UTCEG score recompute
  70. 2026-08-11 03:06 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3
  71. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  72. 2026-08-10 01:04 UTCEG score recompute
  73. 2026-08-10 01:04 UTCGHSA enrichmentGHSA-jxxc-m933-38gm · GitHub CVSS 5.3

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9242?
CVE-2026-9242 is a medium vulnerability published on June 27, 2026. The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to Authentication Bypass via Insufficient Verification of Data Authenticity in all versions up to and including 6.0.8.6. This is due to the PayPal IPN callback handler…
When was the CVE record for CVE-2026-9242 published?
The CVE record for CVE-2026-9242 was published on June 27, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 29, 2026; the record at its source may have been updated since.
Is CVE-2026-9242 actively exploited?
CVE-2026-9242 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9242?
CVE-2026-9242 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-9242?
No fix for CVE-2026-9242 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-2026-9242 are linked in the Vendor Advisories panel on this page.

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