Vulnerability Report

CVE-2026-3260

Title: Resource Exhaustion leading to DoS in Undertow

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-3260.

CWE Category CWE-770
Published Date Mar 24, 2026
Modified Date Jul 07, 2026
Exploit Status Not Found
Score 0.0 CVSS v3.1
Exploit Probability (EPSS)
0.44%

Vulnerability Summary

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.

Impacted Vendors

P
pivotal 1
F
fuse 1
M
miklos_szeredi 1
R
redhat 9
B
broadcom 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-3260 https://bugzilla.redhat.com/show_bug.cgi?id=2443010
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.9
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-3260 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.