CVE-2021-21377

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.82% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 57.0% of scored records. A rank, not a probability.

NVD base score

5.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-03-23 15:25Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Weaknesses

• CWE-601URL Redirection to Untrusted Site ('Open Redirect')Base

Data version

5.1

Document digest

5bbc571ec50e6ed04f3c43ca61a1ae1bee3e0a12dc4c8c2da3ed299b64e3fab5

• pypi.orghttps://pypi.org/project/omero-web/x_refsource_MISC
• github.comhttps://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021x_refsource_MISC
• github.comhttps://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908cx_refsource_MISC
• github.comhttps://github.com/ome/omero-web/security/advisories/GHSA-g4rf-pc26-6hmrx_refsource_CONFIRM
• www.openmicroscopy.orghttps://www.openmicroscopy.org/security/advisories/2021-SV2/x_refsource_MISC