XML External Entity (XXE) vulnerabilities
CWE-611 · 12 tracked
XML External Entity (XXE) (CWE-611) is a recognized software weakness class in the MITRE CWE catalog. The vulnerabilities below are all instances of this pattern.
How it’s exploited
How xml external entity (xxe) is exploited depends on the specific vulnerability, but every CVE in this class shares the same underlying flaw pattern — which is why the same class of mitigation applies across them.
How to prevent it
Recognizing the xml external entity (xxe) pattern lets you apply one class of fix across every affected component. Each CVE page below carries specific, version-level remediation.
Tracked xml external entity (xxe) vulnerabilities
12 CVEs in this class, each with severity, exploit status, EPSS, and remediation.
CVE-2026-54079CVE-2026-54078CVE-2026-54082CVE-2026-56817CVE-2026-54640GHSA-8678-w3jw-xfc2CVE-2026-55471CVE-2025-58175CVE-2026-44020CVE-2026-44018CVE-2026-45071CVE-2026-44618
Frequently asked questions
- What is XML External Entity (XXE)?
- XML External Entity (XXE) (CWE-611) is a recognized software weakness class in the MITRE CWE catalog. The vulnerabilities below are all instances of this pattern.
- How is xml external entity (xxe) exploited?
- How xml external entity (xxe) is exploited depends on the specific vulnerability, but every CVE in this class shares the same underlying flaw pattern — which is why the same class of mitigation applies across them.
- How do you prevent xml external entity (xxe)?
- Recognizing the xml external entity (xxe) pattern lets you apply one class of fix across every affected component. Each CVE page below carries specific, version-level remediation.
- How many xml external entity (xxe) vulnerabilities are there?
- O3 tracks 12 vulnerabilities classified as CWE-611 (XML External Entity (XXE)), each with severity, exploit status, EPSS exploitation probability, and remediation. The full list is below.