CVE-2021-36890

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 34.0% 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:N/UI:R/S:U/C:N/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

2022-05-31 19:30Z4 YR AGO

Last updated

2026-04-28 16:07Z4 MO AGO

Reserved

2021-07-19

Assigning CNA

Patchstack

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-352Cross-Site Request Forgery (CSRF)Compound

Data version

5.2

Document digest

395bdf4482de4d3a098e2be4e2d5fb5fc350fc3d0ab0b09c77a401d9cf9b6c01

• wordpress.orghttps://wordpress.org/plugins/social-share-buttons-by-supsystic/x_refsource_CONFIRM
• patchstack.comhttps://patchstack.com/database/vulnerability/social-share-buttons-by-supsystic/wordpress-social-share-buttons-by-supsystic-plugin-2-2-2-cross-site-request-forgery-csrf-vulnerabilityx_refsource_CONFIRM