CVE-2026-111646
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}.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.2 HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.39% probability · 32th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Source
- disclosure@vulncheck.com
EPSS moved from 0.4% on 17 October 2026 to 0.4% on 26 October 2026.
References
- https://github.com/javahuang/SurveyKing
- https://github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/api/src/main/java/cn/surveyking/server/api/SurveyApi.java#L99-L107
- https://github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/rdbms/src/main/java/cn/surveyking/server/impl/FileServiceImpl.java#L197-L228
- https://github.com/javahuang/SurveyKing/commit/9489171d53e55ace2856a91af38034665c0064a4
- https://hackmd.io/@hieuPenguinnn/surveyking-public-preview-unauth-file-read
- https://www.vulncheck.com/advisories/surveyking-before-1.13.0-unauthenticated-file-download-via-api-public-preview
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.