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01 Record

CVE-2026-49869

Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`

CriticalKEVPUBLISHEDCNA: GitHub_M
CNA base score10.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

02 Description

Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`

03 Exploitation and scoring

Exploitation
Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-09-02. Federal remediation due 2026-09-05.
SSVC decision
  • ExploitationactiveCISA reports credible evidence of active exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.09% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 81.3% of scored records. A rank, not a probability.
NVD base score
10.0 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-25.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-06-26 20:58Z4 MO AGO
Last updated
2026-09-03 03:55Z1 MO AGO
Reserved
2026-06-01
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Critical (CVSS 10.0)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
  • CWE-184Incomplete List of Disallowed InputsBase
  • CWE-287Improper AuthenticationClass
  • CWE-918Server-Side Request Forgery (SSRF)Base
Data version
5.2
Document digest
197df4583a6687391e2a1b0dffef2c2f9e3bd5676c9088af2a2870616b1235b9

05 Affected products

VendorProductVersionsPlatforms
kestra-iokestra< 1.0.45, >= 1.1.0, < 1.3.21—

06 References