What is CVE-2026-34596?

CVE-2026-34596 is a high-severity vulnerability in Sandboxie-plus Sandboxie, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2026-05-05.

How severe is CVE-2026-34596?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Sandboxie-plus Sandboxie

CVE-2026-34596

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, a Time-of-Check-to-Time-of-Use (TOCTOU) race condition exists during addon installation. When a user installs an addon through t…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (2.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sandboxie-plus Sandboxie — versions < 1.17.3

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-xjvp-63f2-v585 (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-34596?: CVE-2026-34596 is a high-severity vulnerability in Sandboxie-plus Sandboxie, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2026-05-05.
How severe is CVE-2026-34596?: High severity. CVSS v3 base score is 7.0 out of 10.