CVE-2026-3260

CVE-2026-3260 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Rejected reason: The Undertow web server enforces a default maximum HTTP request entity size limit. Any request (including GET or HEAD) containing a body that exceeds this configurable limit is safely dropped by the server, preventing single-request Resource Exhaustion (Out of Memory) Denial of Service attacks.

Frequently asked questions

What is CVE-2026-3260?
Rejected reason: The Undertow web server enforces a default maximum HTTP request entity size limit. Any request (including GET or HEAD) containing a body that exceeds this configurable limit is safely dropped by the server, preventing single-request Resource Exhaustion (Out of Memory) Denial of Service attacks.
Is CVE-2026-3260 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-3260?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3260 have an EU (EUVD) identifier?
Yes. CVE-2026-3260 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14732.
When was CVE-2026-3260 published?
CVE-2026-3260 was published on 2026-03-24 and last updated on 2026-07-07.

EU advisories (EUVD)