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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 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)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

May 29, 2026

Last Modified

July 21, 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 6× in last 7d / 104× 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 369 total refreshes for this CVE.

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

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, with the most recent update on July 21, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 58.4% of all scored CVEs.
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

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