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TI-2021-04475 Aliases CVE-2021-21376GHSA-gfp2-w5jm-955q

Information Exposure in OMERO.web

Priority LOW 32CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

OMERO.web is open source Django-based software for managing microscopy imaging. OMERO.web before version 5.9.0 loads various information about the current user such as their id, name and the groups they are in, and these are available on the main webclient pages. This represents an information exposure vulnerability. Some additional information being loaded is not used by the webclient and is being removed in this release. This is fixed in version 5.9.0.

Why it matters now

EPSS 0.01457 73rd percentileScored 2026-11-07
Fix Fixed omero-web (ome): 5.9.0omero-web (PyPI): 5.9.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
omeomero-webbefore 5.9.05.9.0Patch availableCNA
—omero-web (PyPI)before 5.9.05.9.0Patch availableGHSA-gfp2-w5jm-955q
  • omero-web Vendorome Affected before 5.9.0 Fixed in 5.9.0 Patch available CNA
  • omero-web (PyPI) Vendor— Affected before 5.9.0 Fixed in 5.9.0 Patch available GHSA-gfp2-w5jm-955q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openmicroscopy:omero.web:*:*:*:*:*:*:*:*before 5.9.0Vulnerableome
  • cpe:2.3:a:openmicroscopy:omero.web:*:*:*:*:*:*:*:* Versions before 5.9.0 Vulnerable ·ome

Remediation

  • Fix · CNA omero-web (ome) Fixed in 5.9.0
  • Fix · GHSA-gfp2-w5jm-955q omero-web (PyPI) Fixed in 5.9.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21376
  2. 2026-10-03 Alias added: GHSA-gfp2-w5jm-955q

References

Patch 1

Advisory 5

Other 4

  • TI-2020-06414 OMERO.web before 5.6.3 optionally allows sensitive data elements (e.g., a session key) to… CVSS 3.1MEDIUM 5.7
  • TI-2021-04476 Open Redirect in OMERO.web CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences