CVE-2026-45807

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 69% 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, secondary
Elevated
7.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.7Exploit: NoneExposed: 0

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

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:// URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard only inspects the literal URI.toString(), so a URL-encoded .. written as %2E%2E slips through. The downstream code then calls URI.getPath(), which decodes %2E%2E back to .., and the resulting path is handed to Paths.get(...) without normalization. The OS resolves the .. segments at open(2) time, so an authenticated user with a single execution can read any file the Kestra process has access to on the host filesystem (/etc/passwd, mounted secrets, other tenants' execution outputs, etc.). This vulnerability is fixed in 1.0.43 and 1.3.19.

CVSS v3
7.7
EG Score
7.7(medium)
EPSS
30.8%
KEV
Not listed

Published

June 26, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Path traversal via URL-encoded "%2E%2E" in execution and namespace file endpoints allows arbitrary file read · Advisory · kestra-io/kestra · GitHub

https://github.com/kestra-io/kestra/security/advisories/GHSA-3529-p4wf-xp79

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 55× 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. 2026-07-15 22:15 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 09:39 UTCEG score recompute
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 20:59 UTCEG score recompute
  6. 2026-07-14 08:23 UTCEG score recompute
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 19:44 UTCEG score recompute
  9. 2026-07-13 07:08 UTCEG score recompute
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-12 18:30 UTCEG score recompute
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-12 05:42 UTCEG score recompute
  14. 2026-07-11 17:06 UTCEG score recompute
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 04:30 UTCEG score recompute
  17. 2026-07-10 15:53 UTCEG score recompute
  18. 2026-07-10 03:15 UTCEG score recompute
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 14:40 UTCEG score recompute
  21. 2026-07-09 02:04 UTCEG score recompute
  22. 2026-07-08 15:16 UTCEPSS rescore
  23. 2026-07-08 13:26 UTCEG score recompute
  24. 2026-07-08 00:49 UTCEG score recompute
  25. 2026-07-07 13:46 UTCEPSS rescore
Show 30 more
  1. 2026-07-07 12:13 UTCEG score recompute
  2. 2026-07-06 23:37 UTCEG score recompute
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 11:01 UTCEG score recompute
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 22:04 UTCEG score recompute
  7. 2026-07-05 09:28 UTCEG score recompute
  8. 2026-07-04 20:52 UTCEG score recompute
  9. 2026-07-04 08:15 UTCEG score recompute
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-03 19:39 UTCEG score recompute
  12. 2026-07-03 07:03 UTCEG score recompute
  13. 2026-07-02 18:27 UTCEG score recompute
  14. 2026-07-02 05:51 UTCEG score recompute
  15. 2026-07-01 17:13 UTCEG score recompute
  16. 2026-07-01 15:07 UTCEPSS rescore
  17. 2026-07-01 04:37 UTCEG score recompute
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-30 16:00 UTCEG score recompute
  20. 2026-06-30 03:21 UTCEG score recompute
  21. 2026-06-29 14:45 UTCEG score recompute
  22. 2026-06-29 02:09 UTCEG score recompute
  23. 2026-06-28 14:07 UTCEPSS rescore
  24. 2026-06-28 13:33 UTCEG score recompute
  25. 2026-06-28 04:56 UTCEPSS rescore
  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-28 00:56 UTCEG score recompute
  28. 2026-06-27 12:19 UTCEG score recompute
  29. 2026-06-26 23:42 UTCEG score recompute
  30. 2026-06-26 23:42 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45807?
CVE-2026-45807 is a high vulnerability published on June 26, 2026. Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:// URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard only…
When was CVE-2026-45807 disclosed?
CVE-2026-45807 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45807 actively exploited?
CVE-2026-45807 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45807?
CVE-2026-45807 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-45807?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45807, 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

Explore the affected products and dependency analysis for CVE-2026-45807

Explore →

Is Your Infrastructure Affected by CVE-2026-45807?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs