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CVE-2026-85665— Bruno through 4.1.0 Arbitrary File Read via Unconfined Body File Path

Quick assessment

Affected
usebruno bruno
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

usebruno Bruno是usebruno团队开源的一个用于探索和测试 Api 的开源 IDE。 usebruno bruno 4.1.0及之前版本存在路径遍历漏洞，该漏洞源于对请求体声明中的文件路径验证不足，攻击者可通过包含父目录遍历序列的body:file路径，在集合执行时读取集合目录之外的任意本地文件，并将文件内容外泄至攻击者控制的端点。

CVSS 6.5 · Medium EPSS 0.77% · P54

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
usebruno bruno ≤ 4.1.0 affected
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I. Basic Information for CVE-2026-85665

Vulnerability Information
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Vulnerability Title
Bruno through 4.1.0 Arbitrary File Read via Unconfined Body File Path
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
usebruno bruno 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
usebruno Bruno是usebruno团队开源的一个用于探索和测试 Api 的开源 IDE。 usebruno bruno 4.1.0及之前版本存在路径遍历漏洞，该漏洞源于对请求体声明中的文件路径验证不足，攻击者可通过包含父目录遍历序列的body:file路径，在集合执行时读取集合目录之外的任意本地文件，并将文件内容外泄至攻击者控制的端点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
usebruno bruno 0 ~ 4.1.0 -

II. Public POCs for CVE-2026-85665

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III. Intelligence Information for CVE-2026-85665

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Patches & Fixes for CVE-2026-85665 (1)

Vendor Advisories for CVE-2026-85665 (1)

Proof of Concept for CVE-2026-85665 (1)

Other References for CVE-2026-85665 (1)

IV. Related Vulnerabilities

Same product: bruno
Same vendor: usebruno
Same weakness: CWE-22

V. Comments for CVE-2026-85665

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