Moderate severityNVD Advisory· Published Mar 23, 2021· Updated Aug 3, 2024
Open Redirect in OMERO.web
CVE-2021-21377
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
omero-webPyPI | < 5.9.0 | 5.9.0 |
Affected products
2Patches
Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
10- github.com/advisories/GHSA-g4rf-pc26-6hmrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21377ghsaADVISORY
- github.com/ome/omero-web/blob/master/CHANGELOG.mdghsax_refsource_MISCWEB
- github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908cghsax_refsource_MISCWEB
- github.com/ome/omero-web/security/advisories/GHSA-g4rf-pc26-6hmrghsax_refsource_CONFIRMWEB
- github.com/pypa/advisory-database/tree/main/vulns/omero-web/PYSEC-2021-32.yamlghsaWEB
- pypi.org/project/omero-webghsaWEB
- pypi.org/project/omero-web/mitrex_refsource_MISC
- www.openmicroscopy.org/security/advisories/2021-SV2ghsaWEB
- www.openmicroscopy.org/security/advisories/2021-SV2/mitrex_refsource_MISC
News mentions
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