CVE-2018-18628: Pippo

Critical severity, CVSS 9.8. EPSS: 5.5% chance of exploitation in the next 30 days.

An issue was discovered in Pippo 1.11.0. The function SerializationSessionDataTranscoder.decode() calls ObjectInputStream.readObject() to deserialize a SessionData object without checking the object types. An attacker can create a malicious object, base64 encode it, and place it in the PIPPO_SESSION field of a cookie. Sending this cookie may lead to remote code execution.

Affected products

• Pippo Pippo: version 1.11.0 only

Published 2018-10-23. Last modified 2026-06-17.