CVE-2026-73243
kkFileView: Unauthenticated SSRF via /addTask with fullfilename type-confusion bypass
- State
- Published
- Severity
- 5.8 Medium
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Reserved
- Aug 11, 2026
Description
kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N | GitHub_M |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
kkFileViewkekingcn |
|
References
- https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m
- https://github.com/kekingcn/kkFileView/issues/765
- https://github.com/kekingcn/kkFileView/pull/767
- https://github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709
- https://github.com/kekingcn/kkFileView/releases/tag/v5.0.1
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.