High severity · published Jul 20, 2026
CVE-2026-63107
LimeSurvey SSRF via REST API Survey Template Host Header
7.7
CVSS
0.4%
EPSS
No
On KEV
Description
LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use of the HTTP Host header in the getTemplateData() function to reach internal network services, cloud metadata endpoints, and extract sensitive credentials such as IAM tokens from instance metadata services.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
LimeSurvey · LimeSurvey
through 6.17.10; through 7.0.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63107
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63107
github.com
https://github.com/geo-chen/oss/blob/main/limesurvey.md
www.vulncheck.com
https://www.vulncheck.com/advisories/limesurvey-ssrf-via-rest-api-survey-template-host-header
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