CVE 8.7 HIGH

Dozzle: Cross-Site WebSocket Hijacking (CSWSH) on exec/attach endpoints bypasses authentication_CVE-2026-44985

8.7 / 10
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Description

Dozzle is a realtime log viewer for docker containers. Prior to 10.5.2, he WebSocket upgrader for the /exec and /attach endpoints uses CheckOrigin: func(r *http.Request) bool { return true }, accepting upgrade requests from any origin. Combined with the JWT cookie using SameSite: Lax, this enables Cross-Site WebSocket Hijacking (CSWSH). An attacker hosting a page on a same-site origin (e.g., a sibling subdomain, or another service on localhost) can initiate a WebSocket connection to the exec endpoint that carries the victim's valid JWT cookie, gaining interactive shell access in any container the victim is authorized to access. This vulnerability is fixed in 10.5.2.

AI Analysis

Cross-Site WebSocket Hijacking (CSWSH) vulnerability in Dozzle's exec and attach endpoints, allowing attackers to gain interactive shell access to containers

Basic Information

ID CVE-2026-44985
Source GitHub_M
Published May 26, 2026 at 21:58

Affected Product

Vendor amir20
Product dozzle
Version < 10.5.2
Affected Versions amir20 dozzle < 10.5.2

CWE Classification

AI Assessment

AI Score 8.7 / 10
AI Severity High
Vendor amir20
Product Dozzle
Version < 10.5.2

References

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