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Vulnerability record · CVE-2019-12406 · published 6 November 2019

CVE-2019-12406: Apache cxf allocation without limits vulnerability

Apache · Cxf

Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of message attachments present in a given message. This leaves open the possibility of a denial of service type attack, where a malicious user crafts a message containing a very large number of message attachments. From the 3.3.4 and 3.2.11 releases, a default limit of 50 message attachments is enforced. This is configurable via the message property "attachment-max-count".

6.5 CVSS 3.1 Medium EPSS 6.3% · top 6.7% CWE-770 · Allocation without limits
6.5CVSS 3.1 base score, v2 4.3
6.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
28References
17 Jun 2026Last modified by NVD

Description

Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of message attachments present in a given message. This leaves open the possibility of a denial of service type attack, where a malicious user crafts a message containing a very large number of message attachments. From the 3.3.4 and 3.2.11 releases, a default limit of 50 message attachments is enforced. This is configurable via the message property "attachment-max-count".

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cxf.apache.org/security-advisories.data/CVE-2019-12406.txt.asc Vendor Advisory
https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/r92238967ba2783d3ab5a483f2e17f5fdaa8ace98990f69f9e8e15de0%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rabc395b38acb7f2465bfbf0bc16d6e1e95720c89bea87abe8808eeea%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rb2a6dab1f781f55326543c56dc29ea677759439ddfeba920c83037e6%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rca465c9d1e1969281338522b76701c85a07abd045c494261137236e0%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.o
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html PatchThird Party Advisory
http://cxf.apache.org/security-advisories.data/CVE-2019-12406.txt.asc Vendor Advisory
https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/r92238967ba2783d3ab5a483f2e17f5fdaa8ace98990f69f9e8e15de0%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rabc395b38acb7f2465bfbf0bc16d6e1e95720c89bea87abe8808eeea%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rb2a6dab1f781f55326543c56dc29ea677759439ddfeba920c83037e6%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rca465c9d1e1969281338522b76701c85a07abd045c494261137236e0%40%3Cissues.cxf.apache.or
https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.o
https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.o
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-12406), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.