CVE-2021-39341

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

21.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 97.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-11-01 21:01Z4 YR AGO

Last updated

2025-03-31 17:45Z1 YR AGO

Reserved

2021-08-20

Assigning CNA

Wordfence

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

• CWE-285Improper AuthorizationClass
• CWE-319Cleartext Transmission of Sensitive InformationBase
• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

fac2a3651061fb88735dd9e5d81ec427f7978a6ce66376c547d6be8bdbe56c74

• www.wordfence.comhttps://www.wordfence.com/blog/2021/10/1000000-sites-affected-by-optinmonster-vulnerabilities/x_refsource_MISC
• wordfence.comhttps://wordfence.com/vulnerability-advisories/#CVE-2021-39341x_refsource_MISC
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/optinmonster/trunk/OMAPI/RestApi.php?rev=2606519#L1460x_refsource_MISC