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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-j643-x8pv-8m67 Dozzle's Cross-Site WebSocket Hijacking (CSWSH) on exec/attach endpointsbypasses authentication
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 29 May 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Amirraminfar
Amirraminfar dozzle
CPEs cpe:2.3:a:amirraminfar:dozzle:*:*:*:*:*:docker:*:*
Vendors & Products Amirraminfar
Amirraminfar dozzle
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}


Thu, 28 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 26 May 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Amir20
Amir20 dozzle
Vendors & Products Amir20
Amir20 dozzle

Tue, 26 May 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title Dozzle: Cross-Site WebSocket Hijacking (CSWSH) on exec/attach endpoints bypasses authentication
Weaknesses CWE-346
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-28T14:15:19.019Z

Reserved: 2026-05-08T16:23:33.265Z

Link: CVE-2026-44985

cve-icon Vulnrichment

Updated: 2026-05-28T14:15:12.972Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-26T22:16:43.587

Modified: 2026-05-29T19:30:05.600

Link: CVE-2026-44985

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T00:00:16Z

Weaknesses