CVE-2026-63107

HIGH 7.7

LimeSurvey SSRF via REST API Survey Template Host Header

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	limesurvey
Product	limesurvey
Published	Jul 20, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

LimeSurvey / LimeSurvey

0 ≤ 6.17.10 0 ≤ 7.0.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/geo-chen/oss/blob/main/limesurvey.md vulncheck.com: https://www.vulncheck.com/advisories/limesurvey-ssrf-via-rest-api-survey-template-host-header

Credits

George Chen