CVE-2026-8420

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

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.1% 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

Deferred. NVD last modified this record on 2026-07-23.

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

2026-05-20 01:25Z3 MO AGO

Last updated

2026-05-20 13:56Z3 MO AGO

Reserved

2026-05-12

Assigning CNA

Wordfence

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

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

Data version

5.2

Document digest

bb2cd1e102289360c2e04e7903d957fb0a4d9f278a4d1a7eeea45a77c61ad78b

• www.wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/a62186aa-19aa-445b-8fdc-b029bdafd58f?source=cve
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L208
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L208
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L215
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L215
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L222
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L222
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L293
• plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L293