CVE-2026-65583
Apache CXF: Self-issued ID token claims validation skipped
Description
Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks (issuer/subject/audience/time and sub_jwk binding), enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in the validator. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fixes this issue.
INFO
Published Date :
Aug. 6, 2026, 12:16 p.m.
Last Modified :
Aug. 7, 2026, 12:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade Apache CXF to versions 4.2.3, 4.1.8, or 3.6.12.
- Ensure self-issued ID tokens are not accepted by default.
- Validate required claims (issuer, subject, audience, time, sub_jwk).
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-65583.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/fzj8yzgfl53gclxrcdrnrx3grcpkq51j | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/08/06/23 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-65583 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-65583
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-65583 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-65583 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Aug. 07, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/08/06/23 -
Initial Analysis by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.12 *cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.1.8 *cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (excluding) 4.2.3 Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/fzj8yzgfl53gclxrcdrnrx3grcpkq51j Types: Mailing List, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Added SSVC {'id': 'CVE-2026-65583', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-06T15:17:37.169677Z'} -
New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache CXF', 'versions': [{'status': 'affected', 'version': '4.2.0', 'lessThan': '4.2.3', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.0.0', 'lessThan': '4.1.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '3.6.12', 'versionType': 'semver'}], 'packageName': 'org.apache.cxf:cxf-rt-rs-security-sso-oidc', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] Added Description Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks (issuer/subject/audience/time and sub_jwk binding), enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in the validator. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fixes this issue. Added CWE CWE-345 Added Reference https://lists.apache.org/thread/fzj8yzgfl53gclxrcdrnrx3grcpkq51j