CVE-2020-26286 - OpenCVE

HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an unauthenticated attacker can upload arbitrary files to the upload storage backend including HTML, JS and PHP files. The problem is patched in HedgeDoc 1.7.1. You should however verify that your uploaded file storage only contains files that are allowed, as uploaded files might still be served. As workaround it's possible to block the `/uploadimage` endpoint on your instance using your reverse proxy. And/or restrict MIME-types and file names served from your upload file storage.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

AV:N/AC:L/Au:N/C:N/I:P/A:N

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Hedgedoc	Hedgedoc

Configuration 1 [-]

cpe:2.3:a:hedgedoc:hedgedoc:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/hedgedoc/hedgedoc/commit/e9306991cdb5ff2752c1eeba3fedba42aec3c2d8
https://github.com/hedgedoc/hedgedoc/releases/tag/1.7.1
https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-wcr3-xhv7-8gxc

History

No history.

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2020-12-28T23:25:13

Updated: 2024-08-04T15:56:04.326Z

Reserved: 2020-10-01T00:00:00

Link: CVE-2020-26286

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2020-12-29T00:15:12.593

Modified: 2020-12-30T16:14:55.197

Link: CVE-2020-26286

Redhat

No data.

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