OMERO.web exposes some unnecessary session information in the page
Background
OMERO.web 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. Some additional information being loaded is not used by the webclient and is being removed in this release.
Impact
OMERO.web before 5.9.0
Patches
5.9.0
Workarounds
No workaround
References
For more information
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Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | omero-web | < 5.9.0 | 5.9.0 |
References
- https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021
- https://pypi.org/project/omero-web/
- https://github.com/ome/omero-web/security/advisories/GHSA-gfp2-w5jm-955q
- https://www.openmicroscopy.org/security/advisories/2021-SV1/
- https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c
- https://nvd.nist.gov/vuln/detail/CVE-2021-21376
- https://github.com/ome/omero-web
- https://github.com/pypa/advisory-database/tree/main/vulns/omero-web/PYSEC-2021-31.yaml
- https://pypi.org/project/omero-web
- https://www.openmicroscopy.org/security/advisories/2021-SV1
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-200- Platform
- Python (PyPI)
- Package
omero-web- Disclosed
- 23.03.2021
- Updated
- 11.10.2026 15:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2021-31 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-gfp2-w5jm-955q - CC BY 4.0
Vulnerability history: omero-web
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 06.2020 11.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
- Medium 4
- Low 1
Disclosures per year
- 2020: 1
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 1
- 2025: 2
- 2026: 0
-
OMERO.web exposes some unnecessary session information in the page this entry
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