Medium severity · published Oct 29, 2026
CVE-2026-115299
Contact Form by Supsystic < 1.11.1 - Arbitrary Plugin Settings Update via CSRF
New
5.4
CVSS
–
EPSS
No
On KEV
Description
The Contact Form by Supsystic WordPress plugin before 1.11.1 does not verify a CSRF nonce before saving its mail settings, allowing an attacker to overwrite the site's outbound mail configuration, including the SMTP server, its credentials and the notification recipient, by tricking a logged-in administrator into visiting a crafted page, which can route the Contact Form by Supsystic WordPress plugin before 1.11.1's contact-form notifications through infrastructure the attacker controls.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Contact Form by Supsystic ·
before 1.11.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115299
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115299
exploit
https://wpscan.com/vulnerability/102bbaf2-12c8-48b9-bacb-28de2baec45b/
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5.3
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4.3
CVE-2026-115300
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3.7
CVE-2026-115303
Contact Form by Supsystic < 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping
3.5
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