CVE-2026-57527
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-502
Deserialización de datos no confiables
Fecha de publicación:
26/06/2026
Última modificación:
14/07/2026
Descripción
*** Pendiente de traducción *** Zed Attack Proxy (ZAP) ViewState add-on before version 4 contains an insecure deserialization vulnerability that allows attackers who control a proxied web server to achieve arbitrary code execution by embedding a malicious serialized Java object in the javax.faces.ViewState HTTP response parameter. The JSFViewState.decode() method base64-decodes the ViewState value and passes it directly to ObjectInputStream.readObject() without a deserialization filter, allowlist, or type restriction, causing the malicious object to be deserialized within the ZAP JVM when the Desktop UI renders the ViewState panel.
Impacto
Puntuación base 4.0
8.70
Gravedad 4.0
ALTA
Puntuación base 3.x
8.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://github.com/zaproxy/zap-extensions/commit/ac6c3f94d38505bc0facea286a4d3728044c6e5c
- https://github.com/zaproxy/zap-extensions/pull/7481
- https://github.com/zaproxy/zap-extensions/releases/tag/viewstate-v4
- https://www.vulncheck.com/advisories/zap-viewstate-add-on-insecure-deserialization-via-jsfviewstate-decode
- https://www.zaproxy.org/blog/2026-06-24-java-deserialization-vulnerability-in-zap-viewstate-addon/



