CVE-2021-21377

OMERO.web is open source Django-based software for managing microscopy imaging. OMERO.web before version 5.9.0 supports redirection to a given URL after performing login or switching the group context. These URLs are not validated, allowing redirection to untrusted sites. OMERO.web 5.9.0 adds URL validation before redirecting. External URLs are not considered valid, unless specified in the omero.web.redirect_allowed_hosts setting.

• CWE-601

• https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021Release Notes, Third Party Advisory
• https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908cPatch, Third Party Advisory
• https://github.com/ome/omero-web/security/advisories/GHSA-g4rf-pc26-6hmrThird Party Advisory
• https://pypi.org/project/omero-web/Third Party Advisory
• https://www.openmicroscopy.org/security/advisories/2021-SV2/Vendor Advisory
• https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021Release Notes, Third Party Advisory
• https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908cPatch, Third Party Advisory
• https://github.com/ome/omero-web/security/advisories/GHSA-g4rf-pc26-6hmrThird Party Advisory
• https://pypi.org/project/omero-web/Third Party Advisory
• https://www.openmicroscopy.org/security/advisories/2021-SV2/Vendor Advisory

Published

Mar 23, 2021

Last Modified

Jun 17, 2026

Status

Modified

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