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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache CXF | unaffected |
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Tracking
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Fri, 09 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-399 CWE-788 |
Fri, 09 Oct 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Apache CXF: Unbounded DEFLATE Decompression in CXF JOSE/JWE and SAML Processing (Decompression Bomb) | |
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-10-09T11:07:58.947Z
Reserved: 2026-08-24T13:44:56.686Z
Link: CVE-2026-78384
Vulnrichment
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NVD
Status : Received
Published: 2026-10-09T11:17:02.937
Modified: 2026-10-09T11:17:02.937
Link: CVE-2026-78384
Redhat
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OpenCVE Enrichment
Updated: 2026-10-09T11:30:06Z