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openSUSE Leap 16.0 expat Important Denial of Service Fix 2026-20448-1

opensuse
Calendar Grey April 2, 2026
Dist Opensuse Esm H88
This update addresses critical issues in expat affecting openSUSE Leap 16.0, including denial of service and more.
An update that solves 3 vulnerabilities and has 3 bug fixes can now be installed.

Description

This update for expat fixes the following issues:

- CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity

declaration value (bsc#1259726).

- CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).

- CVE-2026-32778: NULL pointer dereference in `setContext` on retry after an out-of-memory condition

(bsc#1259729).

Patch instructions:

To install this openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-466=1

Topics%20covered

Topics Covered

security advisory denial of service security update important OpenSUSE expat

Patch

Package List

- openSUSE Leap 16.0:

expat-2.7.1-160000.5.1

libexpat-devel-2.7.1-160000.5.1

libexpat1-2.7.1-160000.5.1

References

* bsc#1259711

* bsc#1259726

* bsc#1259729

References:

* https://www.suse.com/security/cve/CVE-2026-32776.html

* https://www.suse.com/security/cve/CVE-2026-32777.html

* https://www.suse.com/security/cve/CVE-2026-32778.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20448-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory denial of service security update important OpenSUSE expat

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