CVE-2026-49869 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-49869CRITICAL

kestra-io kestra — Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  H  H  H   10.0   .0089   56.6     —

AFFECTED
  Product  Versions    Fixed
  kestra   < 1.0.45 –  —

TIMELINE
  Jun 1   Reserved by GitHub_M
  Jun 26  EXPLOIT PUBLISHED — CVE-2026-49869 (kestra-io kestra). Public exploit reference added.
  Jun 26  Published (CNA: GitHub_M)

CWE-78, CWE-184, CWE-287, CWE-918 · CNA: GitHub_M · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith("/configs") to whitelist the public configuration endpoint from Basic Auth. Because the check is a suffix match rather than an exact path match, any API path whose last segment is configs bypasses authentication entirely. An unauthenticated remote attacker can exploit this to create and execute arbitrary workflows without credentials. Because Kestra ships with script execution plugins (plugin-script-shell, plugin-script-python, etc.) enabled by default, this directly results in unauthenticated Remote Code Execution as root inside the Kestra worker container. This vulnerability is fixed in 1.0.45 and 1.3.21.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 1, 2026	Reserved	Reserved by GitHub_M
June 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-49869 (kestra-io kestra). Public exploit reference added.
June 26, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
kestra-io	kestra	—	< 1.0.45	—

Weaknesses

CWE-78 · CWE-184 · CWE-287 · CWE-918

References (1)

https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-49869 at cve.org

Vendors: kestra-io

Weaknesses: CWE-78 · CWE-184 · CWE-287 · CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49869 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.