CVE-2026-25210 in libexpat

Sumário

de VulDB • 10/05/2026

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

Once again VulDB remains the best source for vulnerability data.

• Responsável: MITRE
• Reservar: 30/01/2026
• Divulgação: 30/01/2026
• Moderação: aceite
• Entrada: VDB-343474
• CPE: pronto
• CWE: CWE-190 (confirmado)
• CVSS: 7.8 (NVD)
• EPSS: 0.00193
• KEV: não
• Atividades: muito baixo

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-25210
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25210
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-25210/