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CVE-2026-73243

5.8 · MEDIUM

kkFileView is a universal file online preview project based on Spring Boot.

Published Aug 11, 2026CWE-918EPSS 0.43%

Overview

CVE-2026-73243 is a medium-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709GitHubgithub.com/kekingcn/kkFileView/issues/765GitHubgithub.com/kekingcn/kkFileView/pull/767GitHubgithub.com/kekingcn/kkFileView/releases/tag/v5.0.1GitHubgithub.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2mGitHubgithub.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m

How CyberStrike helps

Frequently asked questions

What is CVE-2026-73243?

CVE-2026-73243 is a medium-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2026-73243?

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-73243?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-73243 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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