CVE-2026-78384

published 2026-10-09

CVE-2026-78384: CompressionUtils.inflate() decompressed attacker-controlled DEFLATE data with no output-size cap. A small (~KB) crafted payload could expand to gigabytes on…

Priority P3 46 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C H I N A N

CompressionUtils.inflate() decompressed attacker-controlled DEFLATE data with no output-size cap. A small (~KB) crafted payload could expand to gigabytes on the heap. Reachable via JWE decryption when zip=DEF (e.g. JoseSessionTokenProvider with RSA-OAEP key wrap) and via SAML redirect/POST binding token inflation — in both cases decompression happens before/independent of trust validation.

Fix: Added a configurable maximum inflated-size cap (default 10 MiB, org.apache.cxf.compression-max-inflated-size system property) to CompressionUtils.inflate(); aborts with DataFormatException once exceeded.
Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
apache	cxf	< 3.6.13	3.6.13
apache	cxf	>= 4.0.0 < 4.1.9	4.1.9
apache	cxf	>= 4.2.0 < 4.2.4	4.2.4
apache_software_foundation	apache_cxf	< 3.6.13	3.6.13
apache_software_foundation	apache_cxf	>= 4.0.0 < 4.1.9	4.1.9
apache_software_foundation	apache_cxf	>= 4.2.0 < 4.2.4	4.2.4
jboss-eap-7	eap74-els-openjdk11-openshift-rhel8	—	—
jboss-eap-7	eap74-els-openjdk17-openshift-rhel8	—	—
jboss-eap-7	eap74-els-openjdk8-openshift-rhel8	—	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

vendor_redhat 7.5 HIGH

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CWE-409