libexpat1 2.4.7-1ubuntu0.8: libexpat1 2.4.7-1ubuntu0.8 for Ubuntu 22.04.1 LTS (jammy)

libexpat1 2.4.7-1ubuntu0.8, released June 21, 2026, fixes 9 CVEs in libexpat1. None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

6.9

Base score, 0 to 10

Highest EPSS

0.0024

15th percentile

Priority of the 9 CVEs

Patch now 0
                                Urgent 0
                                High 0
                                Routine 9

Fixed package versions

Product	Release	Fixed in
libexpat1	Ubuntu 22.04.1 LTS (jammy)	2.4.7-1ubuntu0.8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-32777	libexpat before 2.7.5 allows an infinite loop while parsing DTD content.	5.5	0.0024	None reported
Routine	CVE-2026-56412	libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.	5.9	0.0019	None reported
Routine	CVE-2026-32778	libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.	5.5	0.0019	None reported
Routine	CVE-2026-32776	libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.	5.5	0.0019	None reported
Routine	CVE-2026-50219	libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,	6.9	0.0019	None reported
Routine	CVE-2026-56403	libexpat before 2.8.2 has an integer overflow in storeAtts.	6.9	0.0018	None reported
Routine	CVE-2026-56404	libexpat before 2.8.2 has an integer overflow in addBinding.	6.9	0.0015	None reported
Routine	CVE-2026-56405	libexpat before 2.8.2 has an integer overflow in getAttributeId.	6.9	0.0014	None reported
Routine	CVE-2026-56408	expat: libexpat before 2.8.2 has an integer overflow in copyString.	6.9	0.0014	None reported

Also fixes CVE-2026-32777

SUSE-SU-2026:4623-1
expat on sles 15.6
SUSE-SU-2026:4736-1
MozillaThunderbird on sles 15.7
OPENSUSE-SU-2026:22139-1
MozillaFirefox on opensuse-leap 16.0
SUSE-SU-2026:24260-1
MozillaFirefox on sles 16.0
SUSE-SU-2026:4834-1
MozillaFirefox on sles 15.6, sles 15.7
SUSE-SU-2026:4619-1
expat on sles 15.7
expat 2.6.1-2ubuntu0.5
expat on Ubuntu 24.04.5 LTS (noble)
libexpat1 2.6.1-2ubuntu0.5
libexpat1 on Ubuntu 24.04.5 LTS (noble)

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