Is CVE-2009-1890 being actively exploited?

CVE-2009-1890 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-1890?

CVE-2009-1890 has a CVSS 2.0 base score of 7.1 (HIGH).

CVE-2009-1890

HIGH · CVSS 7.1EPSS 16.2%EU EUVD

The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests.

Key facts

CVSS score: 7.1 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-400
EPSS score: 16.2% (97th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-1885)
Published: July 5, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-1885 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

apache / http server
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
debian / debian linux
fedoraproject / fedora
redhat / enterprise linux desktop
redhat / enterprise linux eus
redhat / enterprise linux server
redhat / enterprise linux server aus
redhat / enterprise linux workstation

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html(Broken Link, Mailing List)
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00006.html(Mailing List, Third Party Advisory)
http://marc.info/?l=bugtraq&m=129190899612998&w=2(Issue Tracking, Mailing List, Third Party Advisory)
http://osvdb.org/55553(Broken Link)
http://secunia.com/advisories/35691(Not Applicable, Vendor Advisory)
http://secunia.com/advisories/35721(Not Applicable)
http://secunia.com/advisories/35793(Not Applicable)
http://secunia.com/advisories/35865(Not Applicable)
http://secunia.com/advisories/37152(Not Applicable, Vendor Advisory)
http://secunia.com/advisories/37221(Not Applicable, Vendor Advisory)
http://security.gentoo.org/glsa/glsa-200907-04.xml(Third Party Advisory)
http://support.apple.com/kb/HT3937(Broken Link)
http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?r1=790587&r2=790586&pathrev=790587(Patch, Vendor Advisory)
http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?revision=790587(Vendor Advisory)
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?r1=790587&r2=790586&pathrev=790587(Patch, Vendor Advisory)
http://svn.apache.org/viewvc?view=rev&revision=790587(Vendor Advisory)
http://wiki.rpath.com/Advisories:rPSA-2009-0142(Broken Link)
http://www-01.ibm.com/support/docview.wss?uid=swg1PK91259(Third Party Advisory)
http://www-01.ibm.com/support/docview.wss?uid=swg1PK99480(Third Party Advisory)
http://www.debian.org/security/2009/dsa-1834(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:149(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150(Broken Link)
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2009-1156.html(Third Party Advisory)
http://www.securityfocus.com/archive/1/507852/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/507857/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/bid/35565(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1022509(Broken Link, Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-802-1(Third Party Advisory)
http://www.vupen.com/english/advisories/2009/3184(Permissions Required, Vendor Advisory)
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rb33be0aa9bd8cac9536293e3821dcd4cf8180ad95a8036eedd46365e%40%3Cusers.mina.apache.org%3E

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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