CVE-2026-45807

HIGHPre-NVD 7.77.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (46th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-39921 (ENISA EUVD)Source: ENISA EUVD

7.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.7Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

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
7.7HIGHmedium confidence
EG Risk
51
EG Risk 51/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity77% × 45%
Impact severity (EG Severity): CVSS 7.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.7): severity, escalated by confirmed exploitation. This CVE's 7.7 is its impact severity (EG Severity), not escalated.

EG Severity
7.7 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 26, 2026

Last Modified

October 25, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

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 10× in last 7d / 37× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 155 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 55 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-25 17:33 UTCEG score recompute
  4. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-25 14:26 UTCEG score recompute
  6. 2026-10-25 04:57 UTCEG score recompute
  7. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  12. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-18 03:37 UTCEG score recompute
  15. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-17 13:35 UTCEG score recompute
  17. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  20. 2026-10-13 19:54 UTCOSV refresh
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-12 16:03 UTCEG score recompute
  24. 2026-10-11 19:46 UTCEG score recompute
  25. 2026-10-11 17:00 UTCEG score recompute
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  1. 2026-10-11 14:26 UTCEG score recompute
  2. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  7. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-09-23 07:41 UTCEG score recompute
  17. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-09-18 07:07 UTCEG score recompute
  20. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-09-14 00:56 UTCEG score recompute
  24. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-09-12 15:20 UTCEG score recompute
  26. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  27. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  28. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  29. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  30. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  32. 2026-09-06 14:51 UTCEG score recompute
  33. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  34. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  35. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  36. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  37. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  38. 2026-08-30 19:12 UTCEG score recompute
  39. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  40. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  41. 2026-08-27 22:52 UTCEG score recompute
  42. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  43. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  44. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  45. 2026-08-25 01:20 UTCEG score recompute
  46. 2026-08-24 12:44 UTCEG score recompute
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  48. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  49. 2026-08-22 09:19 UTCEG score recompute
  50. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-08-21 07:43 UTCEG score recompute
  52. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  53. 2026-08-20 06:31 UTCEG score recompute
  54. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  55. 2026-08-18 23:30 UTCEG score recompute
  56. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  57. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  58. 2026-08-16 18:17 UTCEG score recompute
  59. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  60. 2026-08-16 04:46 UTCEG score recompute
  61. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  62. 2026-08-15 03:34 UTCEG score recompute
  63. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  64. 2026-08-14 02:21 UTCEG score recompute
  65. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  66. 2026-08-13 01:09 UTCEG score recompute
  67. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  68. 2026-08-11 23:57 UTCEG score recompute
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  70. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  71. 2026-08-09 21:33 UTCEG score recompute
  72. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  73. 2026-08-08 20:22 UTCEG score recompute
  74. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  75. 2026-08-07 19:10 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-45807?
CVE-2026-45807 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-45807 published?
The CVE record for CVE-2026-45807 was published on June 26, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-45807 actively exploited?
CVE-2026-45807 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45807?
CVE-2026-45807 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45807?
The CVE record for CVE-2026-45807 names the fix: "This vulnerability is fixed in 1.0.43 and 1.3.19."

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