{"id":"CVE-2021-21376","aliases":["EUVD-2021-0157","GHSA-gfp2-w5jm-955q","PYSEC-2021-31"],"status":"published","title":"Information Exposure in OMERO.web","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.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01457,"percentile":0.73857,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2021-03-23T15:25:22Z","modified":"2026-10-20T10:54:29Z","fixes":[{"ecosystem":"PyPI","package":"omero-web","fixed_in":["5.9.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"omero-web","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"omero-web","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.0"}]}],"versions":["5.5.dev1","5.5.dev2","5.6.0","5.6.1","5.6.2","5.6.3","5.6.dev1","5.6.dev2","5.6.dev3","5.6.dev4","5.6.dev5","5.6.dev6","5.6.dev7","5.7.0","5.7.1","5.8.0","5.8.1"]},{"source":"osv","ecosystem":"PyPI","package":"omero-web","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"952f8e5d28532fbb14fb665982211329d137908c"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.0"}]}],"versions":["5.5.dev1","5.5.dev2","5.6.dev1","5.6.dev2","5.6.dev3","5.6.dev4","5.6.dev5","5.6.dev6","5.6.dev7","5.6.0","5.6.1","5.6.2","5.6.3","5.7.0","5.7.1","5.8.0","5.8.1"]}],"products":[{"vendor":"ome","product":"omero-web"},{"vendor":"openmicroscopy","product":"omero.web"}],"references":[{"url":"https://github.com/ome/omero-web/security/advisories/GHSA-gfp2-w5jm-955q","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://pypi.org/project/omero-web/","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","package"]},{"url":"https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://www.openmicroscopy.org/security/advisories/2021-SV1/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21376","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/omero-web/PYSEC-2021-31.yaml","tags":["web"]},{"url":"https://pypi.org/project/omero-web","tags":["web"]},{"url":"https://www.openmicroscopy.org/security/advisories/2021-SV1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gfp2-w5jm-955q"},{"url":"https://github.com/ome/omero-web","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-21376","title":"Information Exposure in OMERO.web","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.","status":"published","published":"2021-03-23T15:25:22Z","modified":"2024-08-03T18:09:15.994Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-0157","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.","status":"published","published":"2021-03-23T15:25:22Z","modified":"2024-08-03T18:09:15Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T03:25:06.913643Z"}],"ghsa":[{"id":"GHSA-gfp2-w5jm-955q","title":"OMERO.web exposes some unnecessary session information in the page","description":"### Background\nOMERO.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.\n\n### Impact\nOMERO.web before 5.9.0\n\n### Patches\n5.9.0\n\n### Workarounds\nNo workaround\n\n### References\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [omero-web](https://github.com/ome/omero-web)\n* Email us at [security](mailto:security@openmicroscopy.org.uk)","status":"published","published":"2021-03-23T15:26:34Z","modified":"2024-10-07T21:25:29Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium"},{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:38:08.742903Z"}],"nvd":[{"id":"CVE-2021-21376","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.","status":"published","published":"2021-03-23T16:15:14.173Z","modified":"2026-06-17T03:35:26.467Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:06:50.805771Z"}],"osv":[{"id":"CVE-2021-21376","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.","status":"published","published":"2021-03-23T16:15:14.173Z","modified":"2026-10-20T10:54:29.622836033Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"GHSA-gfp2-w5jm-955q","title":"OMERO.web exposes some unnecessary session information in the page","description":"### Background\nOMERO.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.\n\n### Impact\nOMERO.web before 5.9.0\n\n### Patches\n5.9.0\n\n### Workarounds\nNo workaround\n\n### References\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [omero-web](https://github.com/ome/omero-web)\n* Email us at [security](mailto:security@openmicroscopy.org.uk)","status":"published","published":"2021-03-23T15:26:34Z","modified":"2026-09-10T03:49:02.354810513Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"medium"},{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:47.822182Z"},{"id":"PYSEC-2021-31","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.","status":"published","published":"2021-03-23T16:15:00Z","modified":"2023-11-08T04:04:43.666459Z","updated_at":"2026-11-02T15:52:52.682031Z"}]}}