CVE-2026-57953

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH 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
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 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(high)
EPSS
16.1%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 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 22× in last 7d / 24× 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.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 06:34 UTCEG score recompute
  4. 2026-07-06 06:34 UTCGHSA enrichment
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 04:29 UTCEG score recompute
  8. 2026-07-05 04:29 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-04 02:25 UTCEG score recompute
  14. 2026-07-04 02:25 UTCGHSA enrichment
  15. 2026-07-03 00:19 UTCEG score recompute
  16. 2026-07-03 00:19 UTCGHSA enrichment
  17. 2026-07-01 22:15 UTCEG score recompute
  18. 2026-07-01 22:15 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 20:07 UTCEG score recompute
  22. 2026-06-30 20:07 UTCGHSA enrichment
  23. 2026-06-29 18:03 UTCEG score recompute
  24. 2026-06-29 18:02 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 June 30, 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 16.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

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