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CVE-2011-4461

22
FAUCET Score

CVE-2011-4461 describes a denial-of-service vulnerability affecting Jetty 8.1.0.RC2 and earlier, as well as related Oracle products like Sun Storage Common Array Manager. This flaw allows remote attackers to consume excessive CPU resources by sending specially crafted form parameters that trigger predictable hash collisions. The vulnerability has a CVSS score of 5.3 (Medium), indicating a low attack complexity and no user interaction required, but only a low impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.9.0CPE matchmatch criteria
cpe:2.3:a:oracle:sun_storage_common_array_manager:6.9.0:*:*:*:*:*:*:*
<= 8.1.0CPE matchmatch criteria
cpe:2.3:a:mortbay:jetty:*:rc2:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:mortbay:jetty:1.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:mortbay:jetty:1.0.1:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:mortbay:jetty:1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.04%
Probability of exploitation in next 30 days
EPSS Percentile
91.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0504 is in the 88th percentile among its peer group of 23,701 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

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 (5)

mavenpatch availablevia ghsa
Product: org.eclipse.jetty:jetty-serverFixed in: 8.1.0.RC4
redhatpatch availablevia redhat_api
Product: Fuse ESB Enterprise 7.1.0
View patch
redhatpatch availablevia redhat_api
Product: Fuse Management Console 7.1.0
View patch
redhatpatch availablevia redhat_api
Product: Fuse MQ Enterprise 7.1.0
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: jetty-eclipse

Vendor Advisories (2)

mavenGHSA-qxp4-27vx-xmm3medium

Improper Input Validation in Jetty

May 14, 2022
redhatCVE-2011-4461Low

jetty: hash table collisions CPU usage DoS (oCERT-2011-003)

Dec 28, 2011

References

archives.neohapsis.com / archives/bugtraq/2011-12/0181.html
marc.info
secunia.com / advisories/47408
secunia.com / advisories/48981
exchange.xforce.ibmcloud.com / vulnerabilities/72017
security.netapp.com / advisory/ntap-20190307-0004
kb.cert.org / vuls/id/903934
US Government Resource
nruns.com / _downloads/advisory28122011.pdf
ocert.org / advisories/ocert-2011-003.html
oracle.com / technetwork/security-advisory/cpuapr2016v3-2985753.html
oracle.com / technetwork/security-advisory/cpujul2018-4258247.html
oracle.com / technetwork/topics/security/cpujan2015-1972971.html
securitytracker.com / id
ubuntu.com / usn/USN-1429-1