VDB-432888 · Submit #1035489 · CVE-2026-124556

kekingcn kkFileView up to 5.0.3 BaseUrlFilter.java BaseUrlFilter.getBaseUrl X-Base-Url redirect

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1	$0-$5k	0.00+

Summaryinfo

A vulnerability categorized as problematic has been discovered in kekingcn kkFileView up to 5.0.3. Impacted is the function BaseUrlFilter.getBaseUrl of the file server/src/main/java/cn/keking/web/filter/BaseUrlFilter.java. The manipulation of the argument X-Base-Url results in redirect. This vulnerability was named CVE-2026-124556. The attack may be performed from remote. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in kekingcn kkFileView up to 5.0.3. It has been classified as problematic. Affected is the function BaseUrlFilter.getBaseUrl of the file server/src/main/java/cn/keking/web/filter/BaseUrlFilter.java. The manipulation of the argument X-Base-Url with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. This is going to have an impact on integrity.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-124556. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1204.001.

It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

kekingcn

Name

kkFileView

Version

Website

Product: https://github.com/kekingcn/kkFileView/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/08/2026 Advisory disclosed
11/08/2026 +0 days VulDB entry created
11/08/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-wrm9-r4fj-f8q5
Status: Confirmed

CNA: VulDB
CVE: CVE-2026-124556 (🔒)

GCVE (CVE): GCVE-0-2026-124556
GCVE (VulDB): GCVE-100-432888
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/08/2026 15:18
Changes: 11/08/2026 15:18 (57)
Complete: 🔍
Submitter: lucasg2g
Cache ID: 216::103

Submitinfo

Accepted

Submit #1035489: kekingcn kkFileView v5.0.2 (reviewed release commit `c4288f7e`, official-baseline jar `server/target/kkFileView-5.0.2.jar`); the `X-Base-Url` header precedence has been in place since 2021 and the same filter pair is still present on upstream `main` URL r (by lucasg2g)