Security Digest · Vulnerability record
CVE-2026-40010: Apache Wicket has a Session Fixation issue
Missing invocation of Servlet http web request method changeSessionId after session binding can be exploited for a session fixation attack in Apache Wicket.
CVSS 9.1 Critical EPSS 0.6% · p49
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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.
From the GitHub advisory
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.
Weakness type: CWE-384.
Product: org.apache.wicket:wicket-auth-roles (Maven) · Assigned by: apache · Published: 2026-05-06
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Maven | org.apache.wicket:wicket-auth-roles | >= 8.0.0-M1, <= 8.17.0 | none listed |
| Maven | org.apache.wicket:wicket-auth-roles | >= 9.0.0-M1, <= 9.22.0 | none listed |
| Maven | org.apache.wicket:wicket-auth-roles | >= 10.0.0-M1, <= 10.8.0 | 10.9.0 |
| Vendor | Product | Affected versions (per 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 scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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.
Timeline
- — CVE record published by apache
- — GitHub-reviewed advisory GHSA-qpjw-p3jg-59j6 published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- lists.apache.org lists.apache.org
Vulnerability records
- GitHub Advisory GHSA-qpjw-p3jg-59j6 github.com
- CVE.org record CVE-2026-40010 cve.org
- NVD entry CVE-2026-40010 nvd.nist.gov
Other references from the CVE record and advisory
- openwall.com openwall.com