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CVE-2026-41049— Caching of Authentication allows Authentication Bypass between users in qSnapper

Quick assessment

Affected
presire qSnapper
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.

presire qSnapper是presire个人开发者开源的一个基于 Qt6/QML 开发的 Linux 图形界面应用，用于通过 D-Bus 和 PolicyKit 安全地管理 Btrfs/Snapper 文件系统快照。 presire qSnapper 1.3.3之前版本存在授权问题漏洞，该漏洞源于不同用户之间身份验证缓存不正确，可能导致本地攻击者在特权用户完成身份验证后使用dbus功能。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
presire qSnapper 1.2.1< 1.3.3 affected
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I. Basic Information for CVE-2026-41049

Vulnerability Information
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Vulnerability Title
Caching of Authentication allows Authentication Bypass between users in qSnapper
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect caching of authentication between different users of the  qSnapper dbus service before version 1.3.3 allowed any local attacker to use dbus functions after a privileged users has authenticated for them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
presire qSnapper 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
presire qSnapper是presire个人开发者开源的一个基于 Qt6/QML 开发的 Linux 图形界面应用，用于通过 D-Bus 和 PolicyKit 安全地管理 Btrfs/Snapper 文件系统快照。 presire qSnapper 1.3.3之前版本存在授权问题漏洞，该漏洞源于不同用户之间身份验证缓存不正确，可能导致本地攻击者在特权用户完成身份验证后使用dbus功能。
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
presire qSnapper 1.2.1 ~ 1.3.3 -

II. Public POCs for CVE-2026-41049

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III. Intelligence Information for CVE-2026-41049

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Vendor Advisories for CVE-2026-41049 (2)

Proof of Concept for CVE-2026-41049 (1)

Same Patch Batch · presire · 2026-06-22 · 5 CVEs total

CVE-2026-41045 8.1 HIGH Weak polkit authentication check in qSnapper
CVE-2026-41046 7.3 HIGH path traversal via `config` parameter in qSnapper
CVE-2026-41047 Information leak via “diff” methods in qSnapper
CVE-2026-41048 Caching of Authentication allows Authentication Bypass in qSnapper

IV. Related Vulnerabilities

Same product: qSnapper
Same vendor: presire
Same weakness: CWE-863