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CVE-2026-63107mediumCWE-918

LimeSurvey SSRF via REST API Survey Template Host Header

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.3epss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Affected products
LimeSurvey · LimeSurvey
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.