Critical 9.1Published Oct 9, 2026

CVE-2026-97468Apache CXF: Authentication bypass via weak cache keys for validated STS tokens

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects Apache Software Foundation Apache CXF. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.19%, higher than 8% of scored CVEs.

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Every CVE for Apache Software Foundation Apache CXF

Exploited in the last 30 days

Apache CXF's STSTokenValidator and Security Token Service (STS) cached validated security tokens under a non-cryptographic 32-bit hash of the token (Java Arrays.hashCode/hashCode()), and treated a cache hit as proof that the presented token had already been validated. An attacker could craft a token (for example a UsernameToken or a self-signed SAML Assertion) whose hash collides with a cached entry. The token would then be accepted without password validation, signature trust verification or a call to the STS. This could let the attacker authenticate as another user and, through STS token validation or renewal, obtain STS-signed tokens for that identity. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

CVSS: 9.1 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-328
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.19% (percentile 8)
Assigned by: apache
NVD analysis: Undergoing Analysis
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache CXF apache_software_foundation:apache_cxf (from the name)	from 4.2.0 before 4.2.4; from 4.0.0 before 4.1.9; before 3.6.13	CNA record

References

https://lists.apache.org/thread.html/qthbnsyhqsxhl9p2h9v5dg4mnwv1b9r6vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/09/9

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.