kkFileView: Unauthenticated SSRF via /addTask with fullfilename type-confusion bypass

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-73243
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-11 20:18:49 UTC
Updated2026-08-11 21:17:52 UTC
DescriptionkkFileView 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.

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

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

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
3.1CNADECLARED5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Kekingcn KkFileView affected < 5.0.1 Not specified

References

ReferenceSourceLinkTags
github.com/kekingcn/kkFileView/pull/767 [email protected] github.com
github.com/kekingcn/kkFileView/releases/tag/v5.0.1 [email protected] github.com
github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf... [email protected] github.com
github.com/kekingcn/kkFileView/issues/765 [email protected] github.com
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