---
title: "CVE-2026-40010: Apache Wicket has a Session Fixation issue"
url: https://erroneo.us/security/cve/CVE-2026-40010/
description: "CVE-2026-40010 (org.apache.wicket:wicket-auth-roles (Maven)): Missing invocation of Servlet http web request method changeSessionId after session binding…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-06
date_modified: 2026-05-11
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-40010"
kev: false
cvss: 9.1
epss: 0.00615
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-40010: Apache Wicket has a Session Fixation issue

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.6% , percentile 49: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 49% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes org.apache.wicket:wicket-auth-roles (Maven) >= 8.0.0-M1, <= 8.17.0, no fixed version listed ; org.apache.wicket:wicket-auth-roles (Maven) >= 9.0.0-M1, <= 9.22.0, no fixed version listed ; org.apache.wicket:wicket-auth-roles (Maven) >= 10.0.0-M1, <= 10.8.0, fixed in 10.9.0 . Check your lockfile, including transitive dependencies.

## What it is

Missing invocation of Servlet http web request method changeSessionId after session binding can be exploited for a session fixation attack in Apache Wicket. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, 9.0.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.

## Affected packages

- Maven `org.apache.wicket:wicket-auth-roles` >= 8.0.0-M1, <= 8.17.0 → fixed: none listed
- Maven `org.apache.wicket:wicket-auth-roles` >= 9.0.0-M1, <= 9.22.0 → fixed: none listed
- Maven `org.apache.wicket:wicket-auth-roles` >= 10.0.0-M1, <= 10.8.0 → fixed: 10.9.0

## Affected products (CVE record)

- Apache Software Foundation Apache Wicket: 10.0.0 <= 10.8.0, 8.0.0 <= 8.17.0, 9.0.0 <= 9.22.0

## Severity

- CISA-ADP CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.61% probability of exploitation activity in the next 30 days; percentile 49.

## Sources

- [lists.apache.org](https://lists.apache.org/thread/61wsc0xdtfd5oozojfx7by9w3jwgkmv1)
- [GitHub Advisory GHSA-qpjw-p3jg-59j6](https://github.com/advisories/GHSA-qpjw-p3jg-59j6)
- [CVE.org record CVE-2026-40010](https://www.cve.org/CVERecord?id=CVE-2026-40010)
- [NVD entry CVE-2026-40010](https://nvd.nist.gov/vuln/detail/CVE-2026-40010)
- [openwall.com](http://www.openwall.com/lists/oss-security/2026/05/06/1)

---
Source page: https://erroneo.us/security/cve/CVE-2026-40010/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt