CVE-2021-39191

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

1.75% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 75.9% 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

2021-09-03 00:00Z5 YR AGO

Last updated

2024-08-04 01:58Z2 YR AGO

Reserved

2021-08-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.7)

CNA CVSS vector

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

Weaknesses

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

Data version

5.1

Document digest

8fa0d058f641a33e69325f4463ff8b61dcc47f9ac918c27507f89abd179bc5e1

• github.comhttps://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-2pgf-8h6h-gqg2
• github.comhttps://github.com/zmartzone/mod_auth_openidc/issues/672
• github.comhttps://github.com/zmartzone/mod_auth_openidc/commit/03e6bfb446f4e3f27c003d30d6a433e5dd8e2b3d
• github.comhttps://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9.4
• lists.fedoraproject.orgFEDORA-2021-8d9aca2dedhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/32RGPW5LZDLDTB7MKZIGAHPSLFOUNWR5/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-814ee0c43bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RHXO4O4G2UQS7X6OQJCVZKHZAQ7SAIFB/vendor-advisory
• lists.debian.org[debian-lts-announce] 20230718 [SECURITY] [DLA 3499-1] libapache2-mod-auth-openidc security updatehttps://lists.debian.org/debian-lts-announce/2023/07/msg00020.htmlmailing-list