CVE-2026-61687

7.1 HIGHpublic exploit available

Published 2026-09-21 · Updated 2026-09-21

AI risk analysis

Summary: The flaw allows unauthenticated attackers to bind a victim's session to an attacker-controlled OAuth identity by exploiting an empty state parameter acceptance in ValidateOAuthState before version 0.91.1.
Exploitability: Exploitation is moderately difficult, requiring the victim to have completed an OAuth flow and specific auth integrations enabled.
Blast radius: If exploited, this could lead to unauthorized access to user accounts and potentially sensitive data.
Prioritized remediation: Update to version 0.91.1 or later to mitigate the vulnerability.

auth-bypassweboauthsession

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.91.1, ValidateOAuthState clears the oauth_state_ session value to an empty string after a successful OAuth callback and later accepts an empty state parameter as equal, allowing an unauthenticated attacker to bind a victim's Hatchet session to an attacker-controlled OAuth identity. Exploitation requires the victim to have completed an OAuth flow in the current session and the deployment to enable auth.google.enabled, auth.github.enabled, or the Slack integration. This issue is fixed in version 0.91.1.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

Weaknesses

CWE-287, CWE-352, CWE-384, CWE-1275

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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