CVE-2026-3655

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-29. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the lwp_ajax_register AJAX handler not binding the Firebase session to the phone number supplied in the request. The idehweb_lwp_activate_through_firebase() function validates that a Firebase OTP session is legitimate, but the phoneNumber returned by Firebase is never compared against the victim's stored phone number. This makes it possible for unauthenticated attackers to authenticate as any user who has a phone number stored in user meta, including administrators, by verifying their own Firebase session and supplying the victim's phone number in the same request.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
38.9%
KEV
Not listed

Published

May 29, 2026

Last Modified

May 29, 2026

References (6)

Vendor Advisories for CVE-2026-3655(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 / 137× 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 345 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-3655?
CVE-2026-3655 is a critical vulnerability published on May 29, 2026. The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the lwpajaxregister AJAX handler not binding the Firebase session to the phone number supplied in the…
When was CVE-2026-3655 disclosed?
CVE-2026-3655 was first published in the National Vulnerability Database on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3655 actively exploited?
CVE-2026-3655 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-3655?
CVE-2026-3655 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-3655?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3655, 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

Explore the affected products and dependency analysis for CVE-2026-3655

Explore →

Is Your Infrastructure Affected by CVE-2026-3655?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs