CVE-2021-21330

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

1.90% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 79.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2021-02-26 02:15Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Low (CVSS 3.1)

CNA CVSS vector

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

Weaknesses

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

Data version

5.1

Document digest

e1067766d3de3ca42ebb30e4c9ecb75c6208694ba630e31bee56f44d10d1a2de

• github.comhttps://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjgx_refsource_CONFIRM
• github.comhttps://github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0c96bx_refsource_MISC
• github.comhttps://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst#374-2021-02-25x_refsource_MISC
• pypi.orghttps://pypi.org/project/aiohttp/x_refsource_MISC
• www.debian.orgDSA-4864https://www.debian.org/security/2021/dsa-4864vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2021-673b10ed77https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN3V7CZJRT4QFCVXB6LDPCJH7NAOFCA5/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-902c1b07c9https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU7ENI54JNEK3PHEFGCE46DGMFNTVU6L/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202208-19https://security.gentoo.org/glsa/202208-19vendor-advisoryx_refsource_GENTOO