avwo Whistle up to 2.10.2 Temporary File lib/service/service.js getFile filename temp file

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 (≈)
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CTI Interest Score
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4.1$0-$5k2.80+

Summaryinfo

A vulnerability categorized as problematic has been discovered in avwo Whistle up to 2.10.2. Affected by this vulnerability is the function getFile of the file lib/service/service.js of the component Temporary File Handler. The manipulation of the argument filename results in temp file. This vulnerability is reported as CVE-2026-55629. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in avwo Whistle up to 2.10.2. Affected is the function getFile of the file lib/service/service.js of the component Temporary File Handler. The manipulation of the argument filename with an unknown input leads to a temp file vulnerability. CWE is classifying the issue as CWE-377. Creating and using insecure temporary files can leave application and system data vulnerable to attack. This is going to have an impact on confidentiality. CVE summarizes:

Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy. Prior to 2.10.3, lib/service/service.js handles GET /cgi-bin/temp/get by reading req.query.filename, joining it to TEMP_FILES_PATH only when it matches the temporary file pattern, and otherwise passing the user-supplied filename directly to getFile, allowing a remote attacker to read arbitrary files such as /etc/passwd. This issue is reported as fixed in version 2.10.3.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-55629 since 06/17/2026. 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. There are known technical details, but no exploit is available.

Upgrading to version 2.10.3 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

Website

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

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Temp file
CWE: CWE-377
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Whistle 2.10.3

Timelineinfo

06/17/2026 CVE reserved
07/16/2026 +29 days Advisory disclosed
07/16/2026 +0 days VulDB entry created
07/16/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-55629 (🔒)
GCVE (CVE): GCVE-0-2026-55629
GCVE (VulDB): GCVE-100-379632

Entryinfo

Created: 07/16/2026 22:06
Changes: 07/16/2026 22:06 (56)
Complete: 🔍
Cache ID: 216::103

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