CVE-2026-71257Network attack vectorHinoki check available

Resource exhaustion via unchecked servlet-part fallback

Published Aug 31, 2026 · Updated Sep 1, 2026

Resource allocation flaws in Apache Wicket 8.0.0 through 10.10.0 allow remote attackers to exhaust resources via multipart uploads. The servlet-part fallback wraps results from HttpServletRequest#getParts() without reapplying configured per-file size or file-count limits, and headerless parts are read fully into memory. The path requires prior multipart parsing plus an application-configured per-file or count limit; oversized or excess-count files then consume storage or memory within external parser limits.

CVSS severity7.5
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource allocation flaws in Apache Wicket 8.0.0 through 10.10.0 allow remote attackers to exhaust resources via multipart uploads. The servlet-part fallback wraps results from HttpServletRequest#getParts() without reapplying configured per-file size or file-count limits, and headerless parts are read fully into memory. The path requires prior multipart parsing plus an application-configured per-file or count limit; oversized or excess-count files then consume storage or memory within external parser limits.

The record

CVE
CVE-2026-71257
Published
Aug 31, 2026
Updated
Sep 1, 2026
Vendor
The Apache Software Foundation
Product
Apache Wicket
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.0 <=10.10.0
  2. Affected versionversion=8.0.0 <=8.18.0
  3. Affected versionversion=9.0.0 <=9.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Wicketversion=10.0.0 <=10.10.0; version=8.0.0 <=8.18.0; version=9.0.0 <=9.23.0

Published CVSS scores

7.5TenableCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8TenableAV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo