libexpat 2.9.0 fixes two vulnerabilities
A post on the oss-security list says libexpat 2.9.0 fixes two vulnerabilities, including an integer overflow on 32-bit platforms.
Source: libexpat 2.9.0 corrige duas vulnerabilidades (seclists.org). Text prepared with AI from this source.
What happened and what to do
On October 5, 2026, a post on the oss-security list said libexpat 2.9.0 fixes two vulnerabilities: CVE-2026-102633, an integer overflow in the expat_realloc function on 32-bit platforms, and CVE-2026-77214, concerning validation of the `len` parameter against the available buffer capacity in XML_ParseBuffer.
A practical response is to identify systems and applications that incorporate libexpat, assess their exposure, and plan an upgrade to the fixed version. The company can also test XML processing flows, monitor errors after the change, and document the version used in each environment.
How the consultancy can help
Wendelmaques can diagnose where libexpat is used and assess exposure, define an upgrade and testing scope, and implement the plan, including monitoring and operation as needed.
Next step
Send a short description of the systems that process XML to receive a scoped proposal for diagnosis and implementation.
Consulting for your project
Infrastructure review, deployment and ongoing operations, with scope and pricing defined in the proposal.
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