CVE-2026-100227

high

Improper Verification of Cryptographic Signature vulnerability in Apache CXF's JAX-RS XML Security module.

Vendor / product: Apache — cxf

Improper Verification of Cryptographic Signature vulnerability in Apache CXF's JAX-RS XML Security module. The JAX-RS XML Signature interceptors (XmlSigInHandler, XmlSigInInterceptor and the streaming XmlSecInInterceptor) did not ensure that the XML passed to the application was covered by the signature. An attacker with any document signed by a trusted key could wrap it in unsigned content, which the application would then treat as signed. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

CVSS

7.5

7.5 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

Timeline (UTC)

Published: 2026-10-09 11:17

Modified: 2026-10-16 18:09

NVD status: Analyzed

Last synced 1 day ago

Verified against the source API 2026-10-27 06:58 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

apache / cxf <3.6.13, ≥4.0.0 <4.1.9, ≥4.2.0 <4.2.4

Weakness classification (CWE)

CWE-362

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://lists.apache.org/thread.html/pst2oopnwt2rwhvkvmt5gdgwn36kq05m

References

https://lists.apache.org/thread.html/pst2oopnwt2rwhvkvmt5gdgwn36kq05m security@apache.org
http://www.openwall.com/lists/oss-security/2026/10/09/11 af854a3a-2127-422b-91ae-364da2661108

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗

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CVE-2026-100227

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