Medium severity5.9NVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026
CVE-2026-111646
CVE-2026-111646
Description
SurveyKing before 1.13.0 contains a missing authorization vulnerability that allows unauthenticated attackers to download any stored file by id through GET /api/public/preview/{attachmentId}. Attackers who know or derive time-ordered snowflake file ids can bypass shared, owner, and project checks in FileServiceImpl.loadFile to read private survey attachments and respondent uploads.
Affected products
1- Range: <1.13.0
Patches
Vulnerability mechanics
References
5- github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/api/src/main/java/cn/surveyking/server/api/SurveyApi.javanvd
- github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/rdbms/src/main/java/cn/surveyking/server/impl/FileServiceImpl.javanvd
- github.com/javahuang/SurveyKing/commit/9489171d53e55ace2856a91af38034665c0064a4nvd
- hackmd.io/@hieuPenguinnn/surveyking-public-preview-unauth-file-readnvd
- www.vulncheck.com/advisories/surveyking-before-1.13.0-unauthenticated-file-download-via-api-public-previewnvd
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