CVE-2026-29200

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

May 4, 2026

Last Modified

May 6, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

[CVE-2026-29200] Сritical IDOR vulnerability in Comet Backup – Comet Backup

https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 33× 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 311 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 21:37 UTCEG score recompute
  22. 2026-08-23 21:37 UTCGHSA enrichment
  23. 2026-08-23 00:19 UTCEPSS rescore
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-20 22:55 UTCEPSS rescore
Show 75 more
  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-19 17:03 UTCEPSS rescore
  3. 2026-08-18 13:48 UTCEPSS rescore
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 13:13 UTCEG score recompute
  6. 2026-08-17 13:13 UTCGHSA enrichment
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 09:15 UTCGHSA enrichment
  9. 2026-08-16 05:05 UTCEG score recompute
  10. 2026-08-16 05:05 UTCGHSA enrichment
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 23:19 UTCGHSA enrichment
  14. 2026-08-14 19:24 UTCGHSA enrichment
  15. 2026-08-14 15:23 UTCGHSA enrichment
  16. 2026-08-14 11:28 UTCGHSA enrichment
  17. 2026-08-14 07:34 UTCGHSA enrichment
  18. 2026-08-14 03:39 UTCEG score recompute
  19. 2026-08-14 03:39 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 10:52 UTCGHSA enrichment
  22. 2026-08-13 06:37 UTCGHSA enrichment
  23. 2026-08-13 01:14 UTCGHSA enrichment
  24. 2026-08-12 21:20 UTCGHSA enrichment
  25. 2026-08-12 17:19 UTCEG score recompute
  26. 2026-08-12 17:19 UTCGHSA enrichment
  27. 2026-08-12 13:50 UTCEPSS rescore
  28. 2026-08-12 00:10 UTCGHSA enrichment
  29. 2026-08-11 20:09 UTCGHSA enrichment
  30. 2026-08-11 16:11 UTCEG score recompute
  31. 2026-08-11 16:11 UTCGHSA enrichment
  32. 2026-08-11 13:42 UTCEPSS rescore
  33. 2026-08-11 05:36 UTCGHSA enrichment
  34. 2026-08-11 01:41 UTCEG score recompute
  35. 2026-08-11 01:41 UTCGHSA enrichment
  36. 2026-08-11 00:00 UTCEPSS rescore
  37. 2026-08-10 11:47 UTCGHSA enrichment
  38. 2026-08-10 06:40 UTCGHSA enrichment
  39. 2026-08-10 02:45 UTCGHSA enrichment
  40. 2026-08-09 22:51 UTCGHSA enrichment
  41. 2026-08-09 18:56 UTCGHSA enrichment
  42. 2026-08-09 15:02 UTCEG score recompute
  43. 2026-08-09 15:02 UTCGHSA enrichment
  44. 2026-08-09 13:46 UTCEPSS rescore
  45. 2026-08-09 11:07 UTCGHSA enrichment
  46. 2026-08-09 06:41 UTCGHSA enrichment
  47. 2026-08-09 02:46 UTCEG score recompute
  48. 2026-08-09 02:46 UTCGHSA enrichment
  49. 2026-08-08 16:37 UTCEPSS rescore
  50. 2026-08-08 10:57 UTCGHSA enrichment
  51. 2026-08-08 07:01 UTCGHSA enrichment
  52. 2026-08-08 03:07 UTCGHSA enrichment
  53. 2026-08-07 23:12 UTCGHSA enrichment
  54. 2026-08-07 19:18 UTCEG score recompute
  55. 2026-08-07 19:18 UTCGHSA enrichment
  56. 2026-08-07 15:23 UTCGHSA enrichment
  57. 2026-08-07 11:28 UTCGHSA enrichment
  58. 2026-08-07 02:20 UTCGHSA enrichment
  59. 2026-08-06 20:56 UTCGHSA enrichment
  60. 2026-08-06 17:01 UTCEG score recompute
  61. 2026-08-06 17:01 UTCGHSA enrichment
  62. 2026-08-06 13:46 UTCEPSS rescore
  63. 2026-08-06 10:15 UTCGHSA enrichment
  64. 2026-08-06 06:20 UTCGHSA enrichment
  65. 2026-08-06 02:25 UTCGHSA enrichment
  66. 2026-08-05 22:31 UTCEG score recompute
  67. 2026-08-05 22:31 UTCGHSA enrichment
  68. 2026-08-05 19:17 UTCEPSS rescore
  69. 2026-08-04 15:10 UTCEPSS rescore
  70. 2026-08-04 04:04 UTCGHSA enrichment
  71. 2026-08-04 00:07 UTCGHSA enrichment
  72. 2026-08-03 20:11 UTCEG score recompute
  73. 2026-08-03 20:11 UTCGHSA enrichment
  74. 2026-08-03 10:36 UTCEPSS rescore
  75. 2026-08-03 01:34 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-29200?
CVE-2026-29200 is a critical vulnerability published on May 4, 2026. A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call.
When was CVE-2026-29200 disclosed?
CVE-2026-29200 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29200 actively exploited?
CVE-2026-29200 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 77.8% of all scored CVEs.
What is the CVSS score of CVE-2026-29200?
CVE-2026-29200 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-29200?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29200, 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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