EUVD-2026-45030Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable endpoint, no auth or user interaction, and a simple traversal parameter give AV:N/AC:L/PR:N/UI:N; arbitrary file read yields C:H with no integrity or availability impact.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Arbitrary file read in the Whistle debugging proxy (avwo/whistle) before 2.10.3 lets remote attackers retrieve any file on the host by abusing the GET /cgi-bin/temp/get endpoint. Because lib/service/service.js only sanitizes req.query.filename when it matches the temporary-file pattern and otherwise hands the raw filename to getFile, a value like ../../../../etc/passwd escapes TEMP_FILES_PATH and is served back. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the Whistle HTTP service and the ability to send a request to the GET /cgi-bin/temp/get endpoint with a crafted req.query.filename that does NOT match the expected temporary-file naming pattern (e.g. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are largely consistent and point to a genuine, easily exploitable information-disclosure bug, though not an urgent mass-exploitation event. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach a network-exposed Whistle instance sends GET /cgi-bin/temp/get?filename=../../../../../../etc/passwd; because the filename does not match the temporary-file pattern, it is passed straight to getFile and the server returns the file contents. The same technique reads application config files, credentials, TLS keys, or SSH keys within the Whistle process user's reach. … |
| Remediation | Vendor-released patch: 2.10.3 - upgrade Whistle to version 2.10.3 or later (for example, npm install -g whistle@latest or pin whistle@2.10.3), per advisory GHSA-3vfr-4gwf-qxfp (https://github.com/avwo/whistle/security/advisories/GHSA-3vfr-4gwf-qxfp) and release https://github.com/avwo/whistle/releases/tag/v2.10.3. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Whistle deployments and identify versions prior to 2.10.3; disable inbound network access to affected instances if they are internet-facing or accessible from untrusted networks. …
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
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