CVE-2026-34527

5.3 MEDIUM
Published: May 05, 2026 Modified: May 08, 2026
View on NVD

Description

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, SbieIniServer::HashPassword converts a SHA-1 digest to hexadecimal incorrectly. The high nibble of each byte is shifted right by 8 instead of 4, which always produces zero for an 8-bit value. As a result, the stored EditPassword hash only preserves the low nibble of each digest byte, reducing the effective entropy from 160 bits to 80 bits. This is layered on top of an unsalted SHA-1 scheme. The reduced entropy makes leaked or backed-up password hashes materially easier to brute-force. This issue has been fixed in version 1.17.3.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-w37h-qm9p-h4x2
Source: security-advisories@github.com
Mitigation Vendor Advisory
https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-w37h-qm9p-h4x2
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mitigation Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.1%
1th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

sandboxie-plus