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CVE-2026-57527
HIGH(8.8)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Risk Signal Score22/100 — NIEDRIG
- CVSS 8.8 — Hoch
EPSS-Score
0%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
8.8
Technische Schwere
Beschreibung
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.
Referenzen
- https://github.com/zaproxy/zap-extensions/commit/ac6c3f94d38505bc0facea286a4d372...
- 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-deserializati...
- https://www.zaproxy.org/blog/2026-06-24-java-deserialization-vulnerability-in-za...