CVE-2021-21376Information Exposure in OMERO.web
- 6.4MediumCVSS base score
- 1.5%Exploitation in 30 daysEPSS · top 26% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By GitHub_M
- 3 months later
· 3 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIomero-webGHSA-gfp2-w5jm-955q (opens in a new tab)
References
References5
- https://github.com/ome/omero-web/security/advisories/GHSA-gfp2-w5jm-955q (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://pypi.org/project/omero-web/ (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.openmicroscopy.org/security/advisories/2021-SV1/ (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-0157 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-gfp2-w5jm-955q (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-21376)Record last updated .