Vulnerability Monitor

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CVE-2021-21376

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.4, indicating it can be exploited remotely over the network but requires specific conditions to be met though user interaction is required requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), for affected systems. Impacting 1 product from openmicroscopy organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-03-23T16:15:14.173

Last Modified

2024-11-21T05:48:13.773

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.4 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openmicroscopy	omero.web	< 5.9.0	Yes

References

https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021 Release Notes, Third Party Advisory ([email protected])
https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c Patch, Third Party Advisory ([email protected])
https://github.com/ome/omero-web/security/advisories/GHSA-gfp2-w5jm-955q Third Party Advisory ([email protected])
https://pypi.org/project/omero-web/ Release Notes, Third Party Advisory ([email protected])
https://www.openmicroscopy.org/security/advisories/2021-SV1/ Vendor Advisory ([email protected])
https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ome/omero-web/security/advisories/GHSA-gfp2-w5jm-955q Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://pypi.org/project/omero-web/ Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openmicroscopy.org/security/advisories/2021-SV1/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For openmicroscopy's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.