{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-24400","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-01-22T18:19:49.172Z","datePublished":"2026-01-26T22:19:02.161Z","dateUpdated":"2026-01-27T21:36:26.716Z"},"containers":{"cna":{"title":"AssertJ has XML External Entity (XXE) vulnerability when parsing untrusted XML via isXmlEqualTo assertion","problemTypes":[{"descriptions":[{"cweId":"CWE-611","lang":"en","description":"CWE-611: Improper Restriction of XML External Entity Reference","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:H/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/assertj/assertj/security/advisories/GHSA-rqfh-9r24-8c9r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/assertj/assertj/security/advisories/GHSA-rqfh-9r24-8c9r"},{"name":"https://github.com/assertj/assertj/commit/85ca7eb6609bb179c043b85ae7d290523b1ba79a","tags":["x_refsource_MISC"],"url":"https://github.com/assertj/assertj/commit/85ca7eb6609bb179c043b85ae7d290523b1ba79a"},{"name":"https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html","tags":["x_refsource_MISC"],"url":"https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html"},{"name":"https://github.com/assertj/assertj/releases/tag/assertj-build-3.27.7","tags":["x_refsource_MISC"],"url":"https://github.com/assertj/assertj/releases/tag/assertj-build-3.27.7"}],"affected":[{"vendor":"assertj","product":"assertj","versions":[{"version":">= 1.4.0, < 3.27.7","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-01-26T22:19:02.161Z"},"descriptions":[{"lang":"en","value":"AssertJ provides Fluent testing assertions for Java and the Java Virtual Machine (JVM). Starting in version 1.4.0 and prior to version 3.27.7, an XML External Entity (XXE) vulnerability exists in `org.assertj.core.util.xml.XmlStringPrettyFormatter`: the `toXmlDocument(String)` method initializes `DocumentBuilderFactory` with default settings, without disabling DTDs or external entities. This formatter is used by the `isXmlEqualTo(CharSequence)` assertion for `CharSequence` values. An application is vulnerable only when it uses untrusted XML input with either `isXmlEqualTo(CharSequence)` from `org.assertj.core.api.AbstractCharSequenceAssert` or `xmlPrettyFormat(String)` from `org.assertj.core.util.xml.XmlStringPrettyFormatter`. If untrusted XML input is processed by tone of these methods, an attacker couldnread arbitrary local files via `file://` URIs (e.g., `/etc/passwd`, application configuration files); perform Server-Side Request Forgery (SSRF) via HTTP/HTTPS URIs, and/or cause Denial of Service via \"Billion Laughs\" entity expansion attacks. `isXmlEqualTo(CharSequence)` has been deprecated in favor of XMLUnit in version 3.18.0 and will be removed in version 4.0. Users of affected versions should, in order of preference: replace `isXmlEqualTo(CharSequence)` with XMLUnit, upgrade to version 3.27.7, or avoid using `isXmlEqualTo(CharSequence)` or `XmlStringPrettyFormatter` with untrusted input. `XmlStringPrettyFormatter` has historically been considered a utility for `isXmlEqualTo(CharSequence)` rather than a feature for AssertJ users, so it is deprecated in version 3.27.7 and removed in version 4.0, with no replacement."}],"source":{"advisory":"GHSA-rqfh-9r24-8c9r","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-27T21:36:16.298177Z","id":"CVE-2026-24400","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-27T21:36:26.716Z"}}]}}