CVE-2020-26286

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Summary

CVECVE-2020-26286
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-29 00:15:00 UTC
Updated2020-12-30 16:14:00 UTC
DescriptionHedgeDoc 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.

Risk And Classification

Problem Types: CWE-434

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Hedgedoc Hedgedoc All All All All
Application Hedgedoc Hedgedoc All All All All

References

ReferenceSourceLinkTags
Arbitrary file upload · Advisory · hedgedoc/hedgedoc · GitHub CONFIRM github.com Third Party Advisory
Release HedgeDoc 1.7.1 · hedgedoc/hedgedoc · GitHub MISC github.com Third Party Advisory
Merge pull request from GHSA-wcr3-xhv7-8gxc · hedgedoc/hedgedoc@e930699 · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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