CVE-2021-3509

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

1.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.7% 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

2021-05-26 23:56Z5 YR AGO

Last updated

2024-08-03 16:53Z2 YR AGO

Reserved

2021-04-20

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

860134fa0b26ab00ba2a65f6ba6f2883b3c3c8985fa0b954ed454f10fce9597b

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1950116x_refsource_MISC
• github.comhttps://github.com/ceph/ceph/blob/f1557e8f62d31883d3d34ae241a1a26af11d923f/src/pybind/mgr/dashboard/controllers/docs.py#L394-L409x_refsource_MISC
• github.comhttps://github.com/ceph/ceph/commit/adda853e64bdba1288d46bc7d462d23d8f2f10cax_refsource_MISC
• github.comhttps://github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27bx_refsource_MISC
• github.comhttps://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27x_refsource_MISC