CVE-2026-29133

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory published 2026-04-02. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to upload PGP keys with UIDs that do not match their email address.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

April 2, 2026

Last Modified

April 16, 2026

Advisory Details (1)

Auto-updated Aug 1, 2026
No patch confirmed yet.
generic

15.0.6.1 Hotfix Release

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure-1503

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 30× 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 231 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-29133?
CVE-2026-29133 is a critical vulnerability published on April 2, 2026. SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to upload PGP keys with UIDs that do not match their email address.
When was CVE-2026-29133 disclosed?
CVE-2026-29133 was first published in the National Vulnerability Database on April 2, 2026, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29133 actively exploited?
CVE-2026-29133 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 85.9% of all scored CVEs.
What is the CVSS score of CVE-2026-29133?
CVE-2026-29133 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-29133?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29133, 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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