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CVE-2009-1191

22
FAUCET Score

CVE-2009-1191 describes a vulnerability in the mod_proxy_ajp module of Apache HTTP Server 2.2.11, allowing remote attackers to retrieve sensitive response data. This data is intended for a client that previously sent a POST request without a body. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and potential for partial confidentiality impact. Despite its age, there is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
2.2.11CPE matchmatch criteria
cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:*
6.06CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
8.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
8.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
9.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.38%
Probability of exploitation in next 30 days
EPSS Percentile
95.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1238 is in the 95th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: JBEWS 1.0 for RHEL 4Fixed in: httpd22-0:2.2.10-16.1.ep5.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1 for RHEL 5Fixed in: httpd-0:2.2.10-4.ep5.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-1191Important

httpd mod_proxy_ajp information disclosure

Apr 21, 2009

References

lists.apple.com / archives/security-announce/2009/Nov/msg00000.html
Broken LinkMailing List
osvdb.org / 53921
Broken Link
secunia.com / advisories/34827
Not Applicable
secunia.com / advisories/35395
Not Applicable
secunia.com / advisories/35721
Not Applicable
security.gentoo.org / glsa/glsa-200907-04.xml
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/50059
Third Party AdvisoryVDB Entry
issues.apache.org / bugzilla/show_bug.cgi
Issue TrackingVendor Advisory
lists.apache.org / thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8261
Third Party Advisory
support.apple.com / kb/HT3937
Broken Link
svn.apache.org / viewvc/httpd/httpd/trunk/CHANGES
PatchVendor Advisory
apache.org / dist/httpd/patches/apply_to_2.2.11/PR46949.diff
PatchVendor Advisory
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
oracle.com / technetwork/topics/security/cpuapr2013-1899555.html
Third Party Advisory
securityfocus.com / bid/34663
PatchThird Party AdvisoryVDB Entry
securitytracker.com / id
Broken LinkThird Party AdvisoryVDB Entry
ubuntu.com / usn/usn-787-1
Third Party Advisory
vupen.com / english/advisories/2009/1147
Permissions Required
vupen.com / english/advisories/2009/3184
Permissions Required