CVE-2021-3856

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

1.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 63.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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

2022-08-26 15:25Z4 YR AGO

Last updated

2024-08-03 17:09Z2 YR AGO

Reserved

2021-10-04

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-552Files or Directories Accessible to External PartiesBase
• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base

Data version

5.1

Document digest

384493938b13ae22fa64982249171216a4bc0d4f43f7068160492f218a38ed8a

• issues.redhat.comhttps://issues.redhat.com/browse/KEYCLOAK-19422x_refsource_MISC
• github.comhttps://github.com/keycloak/keycloak/pull/8588x_refsource_MISC
• github.comhttps://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743x_refsource_MISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2010164x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-3856x_refsource_MISC