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
9.8EG
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
41%
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 17× in last 7d / 58× 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 236 total refreshes for this CVE.

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

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 59.3% 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.

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