OMERO webclient does not validate URL redirects on login or switching group.

中 5.4CVE-2021-21377 · GHSA-g4rf-pc26-6hmr · PYSEC-2021-32 · 23/03/2021 公開 · 17/06/2026 更新

要点

CVE-2021-21377 は omero-web, omero.web (openmicroscopy) に影響する深刻度「中」 (CVSS 5.4) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.83%（全脆弱性の 57.5% より高い）。
対処：5.9.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
omero-web PyPI	`< 5.9.0`	`5.9.0`
omero.web openmicroscopy	`< 5.9.0`	`5.9.0`

概要

Background

OMERO.web supports redirection to a given URL after performing login or switching the group context. These URLs are not validated, allowing redirection to untrusted sites. OMERO.web 5.9.0 adds URL validation before redirecting. External URLs are not considered valid, unless specified in the omero.web.redirect_allowed_hosts setting.

Impact

OMERO.web before 5.9.0

Patches

5.9.0

Workarounds

No workaround

References

For more information

If you have any questions or comments about this advisory:

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NVD の説明

OMERO.web is open source Django-based software for managing microscopy imaging. OMERO.web before version 5.9.0 supports redirection to a given URL after performing login or switching the group context. These URLs are not validated, allowing redirection to untrusted sites. OMERO.web 5.9.0 adds URL validation before redirecting. External URLs are not considered valid, unless specified in the omero.web.redirect_allowed_hosts setting.