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Vulnerability record · CVE-2019-12439 · published 29 May 2019

CVE-2019-12439: Projectatomic bubblewrap improper input validation vulnerability

Projectatomic · Bubblewrap

bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point. In some particular configurations (related to XDG_RUNTIME_DIR), a local attacker may abuse this flaw to prevent other users from executing bubblewrap or potentially execute code.

7.8 CVSS 3.0 High EPSS 0.58% · top 54.7% CWE-20 · Improper input validation
7.8CVSS 3.0 base score, v2 4.6
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point. In some particular configurations (related to XDG_RUNTIME_DIR), a local attacker may abuse this flaw to prevent other users from executing bubblewrap or potentially execute code.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html
https://access.redhat.com/errata/RHSA-2019:1833
https://bugzilla.redhat.com/show_bug.cgi?id=1695963 Issue TrackingThird Party Advisory
https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7b02958ed50e PatchThird Party Advisory
https://github.com/projectatomic/bubblewrap/issues/304 Third Party Advisory
https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3 Release NotesThird Party Advisory
https://security.gentoo.org/glsa/202006-18
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html
https://access.redhat.com/errata/RHSA-2019:1833
https://bugzilla.redhat.com/show_bug.cgi?id=1695963 Issue TrackingThird Party Advisory
https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7b02958ed50e PatchThird Party Advisory
https://github.com/projectatomic/bubblewrap/issues/304 Third Party Advisory
https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3 Release NotesThird Party Advisory
https://security.gentoo.org/glsa/202006-18

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-12439), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.