Linux · 
Ubuntu · Package update · June 21, 2026
Ubuntu · Package update · June 21, 2026libexpat1 2.6.1-2ubuntu0.5: libexpat1 2.6.1-2ubuntu0.5 for Ubuntu 24.04.5 LTS (noble)
libexpat1 2.6.1-2ubuntu0.5, released June 21, 2026, fixes 12 CVEs in libexpat1. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
12
None rated Critical
Exploited
0
None reported
Highest CVSS
8.2
Base score, 0 to 10
Highest EPSS
0.0142
73rd percentile
Priority of the 12 CVEs
Patch now 0
Urgent 0
High 2
Routine 10
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libexpat1 | Ubuntu 24.04.5 LTS (noble) | 2.6.1-2ubuntu0.5 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-59375 | libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. | 8.1 | 0.0142 | None reported |
| High | CVE-2026-45186 | In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. | 8.2 | 0.0048 | None reported |
| Routine | CVE-2026-41080 | expat: libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. | 2.9 | 0.0040 | None reported |
| 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 |
Showing 1 to 12 of 12
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