CVE-2026-57953

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-06-29. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role users to perform unauthorized write operations by accessing the eventing_import_automatic_webhook endpoint registered under spectator-permitted middleware. Attackers with spectator role can exploit this misconfigured access control to create and delete automation workflows, making unauthorized modifications to operation automation configuration and EventGroups.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Mythic < 3.4.0.60 - Unauthorized Automation Workflow Modification via eventing_import_automatic_webhook Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/mythic-unauthorized-automation-workflow-modification-via-eventing-import-automatic-webhook-endpoint
generic

Spectator role bypass -- EventingImportAutomaticWebhook allows spectators to create and delete automation workflows · Issue #565 · its-a-feature/Mythic · GitHub

https://github.com/its-a-feature/Mythic/issues/565
github_commit

commit 82648e8241b8 (its-a-feature/Mythic)

Fix landed in its-a-feature/Mythic commit 82648e8241b8 — awaiting tagged release

https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa

Vendor Advisories for CVE-2026-57953(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 / 53× 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 159 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-57953?
CVE-2026-57953 is a medium vulnerability published on June 29, 2026. Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role users to perform unauthorized write operations by accessing the eventingimportautomatic_webhook endpoint registered under spectator-permitted middleware. Attackers with spectator role can…
When was CVE-2026-57953 disclosed?
CVE-2026-57953 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57953 actively exploited?
CVE-2026-57953 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 63.0% of all scored CVEs.
What is the CVSS score of CVE-2026-57953?
CVE-2026-57953 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-57953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57953, 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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