Chainlibexpat project · libexpat
libexpat: incomplete fixes (2026)
4 CVEs over 3 generations, 4 Jun 2026 to 20 Aug 2026.
Family tree
Left to right by publication date.Oldest first. Select a CVE to open it.- CVE-2026-502194 Jun 2026 First in the chain
- CVE-2026-5613119 Jun 2026 related to CVE-2026-50219
- CVE-2026-5641221 Jun 2026 incomplete fix for CVE-2026-50219
- CVE-2026-7695720 Aug 2026 related to CVE-2026-56131related to CVE-2026-56412and 1 more
Exploited in the wild (CISA KEV) Not in KEV Priority score (0 to 100) High confidence Medium Low Link confidenceHow strong the evidence is that two CVEs are related. High: stated in the CVE text or linked in an advisory, or the same code was patched one release apart. Medium: the same code, or a version step plus a similar description. Low: similar description only.
CVEs in this family
Table view of the tree| CVE | Published | Title | Linked from | Priority |
|---|---|---|---|---|
| CVE-2026-50219 | 4 Jun 2026 | libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer… | First in chain | 5.0 |
| CVE-2026-56131 | 19 Jun 2026 | libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of… | CVE-2026-50219 · related · Medium | 4.8 |
| CVE-2026-56412 | 21 Jun 2026 | libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth… | CVE-2026-50219 · incomplete fix · High | 4.9 |
| CVE-2026-76957 | 20 Aug 2026 | libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks | CVE-2026-56131 · related · Medium | 3.7 |