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
9.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.4Exploit: None knownExposed services: Not assessed

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

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
9.4CRITICALmedium confidence
EG Risk
47
EG Risk 47/100

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
Severity94% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.3%
EPSS %ILE
17th
KEV
Not listed

Published

June 19, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Oct 2, 2026
🔬 Proof of concept available. No fix on record yet. Sources: github.
githubMentions a patch (unverified)🟡 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 7× in last 7d / 31× 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 432 total refreshes for this CVE.

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

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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 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 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-56073?
CVE-2026-56073 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-56073?
No fix for CVE-2026-56073 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-2026-56073 are linked in the Vendor Advisories panel on this page.

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