Zapier fixes bug chain that researchers say risked widespread account takeover

Key Points:

• A five-step vulnerability chain in Zapier's automation service could have allowed attackers to impersonate any signed-in user, risking widespread account takeovers.
• The flaws could expose millions of user accounts and connected systems, but no evidence suggests exploitation prior to the patch. The vulnerabilities were reported and remediated swiftly within a month.
• Organizations should review automation logs for unauthorized actions and consider reauthorizing connections to sensitive systems.

Technical Details: The vulnerabilities did not require malware or insider access; they could be exploited by anyone with a free Zapier account. Attackers could manipulate code running in users' browsers to perform actions as legitimate users.

MITRE ATT&CK Techniques:

• None mentioned

IOCs Mentioned:

• None mentioned