CVE Feed

    Dashboard / CVE / CVE-2026-53577

    CVE-2026-53577

    Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the previewFileFromExecution endpoint (GET /api/v1/{tenant}/executions/{executionId}/file/preview) contains an access control bypass that allows any authenticated user to read output files from any other execution within the same tenant, bypassing execution-level and namespace-level isolation. This vulnerability is fixed in 1.0.45 and 1.3.21.

    Published:Jun 26, 2026
    Last Modified:Jun 27, 2026
    EPS:Jun 26, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Kestra-io
    Product
    Kestra

    Exploits

    https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-55839 (CVSS 8.7) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, Kestra's custom Markdown parse…
    CVE-2026-73247 (CVSS 8.6) — Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0, Kestra's core/src/main/java/io/…
    CVE-2026-73246 (CVSS 7.5) — Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0-rc6, Kestra's worker/src/main/ja…
    CVE-2026-73245 (CVSS 6.5) — Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0-rc6, Kestra's cli/src/main/resou…
    CVE-2026-49869 (CVSS 10) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilte…
    CVE-2026-45807 (CVSS 7.7) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API …
    CVE-2026-49984 (CVSS 7.7) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-…
    CVE-2026-53576 (CVSS 10) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication …
    CVE-2026-55069 (CVSS 8.7) — Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in t…
    CVE-2026-48129 (CVSS 6.5) — Kestra is an open-source, event-driven orchestration platform. Prior to versions 1.3.19, 1.2.19, 1.1.19, and 1…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High