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Vulnerability record · CVE-2026-85665 · published 4 September 2026

CVE-2026-85665: Path traversal vulnerability

Bruno versions through 4.1.0 fail to validate file paths in request body declarations, allowing attackers to read arbitrary local files by using parent-directory traversal segments. When a collection is executed, attackers can craft a request with a body:file path containing ../ sequences that resolve outside the collection directory, causing the application to read and exfiltrate arbitrary files to attacker-controlled endpoints.

7.1 CVSS 4.0 High EPSS 0.77% · top 46.2% CWE-22 · Path traversal Deferred
7.1CVSS 4.0 base score
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
23 Sep 2026Last modified by NVD

Description

Bruno versions through 4.1.0 fail to validate file paths in request body declarations, allowing attackers to read arbitrary local files by using parent-directory traversal segments. When a collection is executed, attackers can craft a request with a body:file path containing ../ sequences that resolve outside the collection directory, causing the application to read and exfiltrate arbitrary files to attacker-controlled endpoints.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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:

References

LinkTags
https://github.com/usebruno/bruno
https://github.com/usebruno/bruno/blob/v4.1.0/packages/bruno-cli/src/runner/prepare-request.js
https://github.com/usebruno/bruno/issues/8230
https://www.vulncheck.com/advisories/bruno-3.4.2-arbitrary-file-read-via-unconfined-body-file-path
https://github.com/usebruno/bruno/issues/8230

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Source: NIST National Vulnerability Database (record CVE-2026-85665), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.