CVE-2026-75140
jsoup XML parser OOM via deeply nested uniquely-namespaced elements
Is CVE-2026-75140 being exploited?
Not confirmed. CVE-2026-75140 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.53% probability of exploitation in the next 30 days.
How severe is CVE-2026-75140?
CVE-2026-75140 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-75140?
Yes. A fix has been recorded for CVE-2026-75140. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-75140 affect?
CVE-2026-75140 affects jsoup <= 1.23.2, Java applications using jsoup XmlTreeBuilder, Servers parsing untrusted XML. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-75140?
Upgrade jsoup to the patched commit/release (862ba2f) and validate/restrict XML nesting.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote resource exhaustion: crafted XML triggers JVM OutOfMemoryError, causing application crash/denial of service.
Patch when possible
- affected<= 1.23.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.