CVE-2026-78384

highpriority · track · 0EPSS 0.004 · 31 %ileDEFRUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.37% (31st) EPSS

CVSS 7.5 · high

Is it mine?

9 products

Check your exposure

Who says so?

3 sources

cert_bund · nvd · certfr

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-409US

affected products (9)

Products and version ranges known to be affected.

Apache Apache CXF <3.6.13< 3.6.13cert_bundDE
Apache Apache CXF <4.1.9< 4.1.9cert_bundDE
Apache Apache CXF <4.2.4< 4.2.4cert_bundDE
Apache CXF< 3.6.13cert_bundDE
Apache CXF< 4.1.9cert_bundDE
Apache CXF< 4.2.4cert_bundDE
apache cxf< 3.6.13nvdUScpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
apache cxf4.0.0 → 4.1.9nvdUScpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
apache cxf4.2.0 → 4.2.4nvdUScpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3824Apache CXF: Mehrere SchwachstellenDeutsch2026-10-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren und offenzulegen, Benutzer auf vom Angreifer kontrollierte Websites umzuleiten oder Denial-of-Service-Zustände auszulösen.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund nvd certfr NVD CVE.org MITRE

published 2026-10-09modified 2026-10-20

references (2) nvd

External citations — patches, advisories, analysis.

http://www.openwall.com/lists/oss-security/2026/10/09/6Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/xoh63rlxn0m9koft5j4jxrfd0hf81v3qIssue TrackingVendor Advisory

scry

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