CVE-2026-56073

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

Score 9.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-20. a secondary CVSS source baseline 9.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: None knownExposed: 0

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

Cap-go before 12.128.2 contains an authentication bypass vulnerability in OTP verification that allows attackers to bypass email verification by modifying server responses. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely mark verification successful, enabling unauthorized 2FA enablement and account takeover.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity94% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Aug 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

🛡️ Bug Report: OTP Bypass — Leads to Email Verification Bypass & Unauthorized 2FA Enablement · Advisory · Cap-go/capgo.app · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-x2gq-85v8-j9v4
generic

Cap-go - OTP Bypass via Response Manipulation in Email Verification | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cap-go-otp-bypass-via-response-manipulation-in-email-verification

Vendor Advisories for CVE-2026-56073(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 33× in last 7d / 176× 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 386 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56073?
CVE-2026-56073 is a critical vulnerability published on June 19, 2026. Cap-go before 12.128.2 contains an authentication bypass vulnerability in OTP verification that allows attackers to bypass email verification by modifying server responses. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely mark verification successful,…
When was CVE-2026-56073 disclosed?
CVE-2026-56073 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56073 actively exploited?
CVE-2026-56073 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 81.3% of all scored CVEs.
What is the CVSS score of CVE-2026-56073?
CVE-2026-56073 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-56073?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56073, 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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