CVE-2011-4461

Jetty 8.1.0.RC2 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

Published: 2011-12-30 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4461 is rated Moderate Risk (49.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.00%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4461

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-21 4.50% 3.00% -1.50%
2 2025-07-13 3.00% 4.50% +1.50%
3 2025-03-30 — 3.00% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4461

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4461

GitHub Security Advisory for CVE-2011-4461

GHSA-qxp4-27vx-xmm3 · Severity: medium · Ecosystem: maven — Improper Input Validation in Jetty

OS Trackers for CVE-2011-4461

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2011-4461
ubuntu medium CVE-2011-4461 medium priority: Ubuntu including 1 source packages (jetty), 11 status rows across 11 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream): ignored 5, released 3, not-affected 2, needs-triage 1. https://ubuntu.com/security/CVE-2011-4461

Affected software / configurations for CVE-2011-4461

Vendor Product Version Raw CPE
oracle sun_storage_common_array_manager 6.9.0 cpe:2.3:a:oracle:sun_storage_common_array_manager:6.9.0:*:*:*:*:*:*:*
mortbay jetty <= 8.1.0 cpe:2.3:a:mortbay:jetty:*:rc2:*:*:*:*:*:*
mortbay jetty 1.0 cpe:2.3:a:mortbay:jetty:1.0:*:*:*:*:*:*:*
mortbay jetty 1.0.1 cpe:2.3:a:mortbay:jetty:1.0.1:*:*:*:*:*:*:*
mortbay jetty 1.1 cpe:2.3:a:mortbay:jetty:1.1:*:*:*:*:*:*:*
mortbay jetty 1.1.1 cpe:2.3:a:mortbay:jetty:1.1.1:*:*:*:*:*:*:*
mortbay jetty 1.2.0 cpe:2.3:a:mortbay:jetty:1.2.0:*:*:*:*:*:*:*
mortbay jetty 1.3.0 cpe:2.3:a:mortbay:jetty:1.3.0:*:*:*:*:*:*:*
mortbay jetty 1.3.1 cpe:2.3:a:mortbay:jetty:1.3.1:*:*:*:*:*:*:*
mortbay jetty 1.3.2 cpe:2.3:a:mortbay:jetty:1.3.2:*:*:*:*:*:*:*
mortbay jetty 1.3.3 cpe:2.3:a:mortbay:jetty:1.3.3:*:*:*:*:*:*:*
mortbay jetty 1.3.4 cpe:2.3:a:mortbay:jetty:1.3.4:*:*:*:*:*:*:*
mortbay jetty 1.3.5 cpe:2.3:a:mortbay:jetty:1.3.5:*:*:*:*:*:*:*
mortbay jetty 2.0 cpe:2.3:a:mortbay:jetty:2.0:alpha1:*:*:*:*:*:*
mortbay jetty 2.0 cpe:2.3:a:mortbay:jetty:2.0:alpha2:*:*:*:*:*:*
mortbay jetty 2.0 cpe:2.3:a:mortbay:jetty:2.0:beta1:*:*:*:*:*:*
mortbay jetty 2.0 cpe:2.3:a:mortbay:jetty:2.0:beta2:*:*:*:*:*:*
mortbay jetty 2.0.0 cpe:2.3:a:mortbay:jetty:2.0.0:*:*:*:*:*:*:*
mortbay jetty 2.0.1 cpe:2.3:a:mortbay:jetty:2.0.1:*:*:*:*:*:*:*
mortbay jetty 2.0.2 cpe:2.3:a:mortbay:jetty:2.0.2:*:*:*:*:*:*:*
mortbay jetty 2.0.3 cpe:2.3:a:mortbay:jetty:2.0.3:*:*:*:*:*:*:*
mortbay jetty 2.0.4 cpe:2.3:a:mortbay:jetty:2.0.4:*:*:*:*:*:*:*
mortbay jetty 2.0.5 cpe:2.3:a:mortbay:jetty:2.0.5:*:*:*:*:*:*:*
mortbay jetty 2.1.0 cpe:2.3:a:mortbay:jetty:2.1.0:*:*:*:*:*:*:*
mortbay jetty 2.1.1 cpe:2.3:a:mortbay:jetty:2.1.1:*:*:*:*:*:*:*
mortbay jetty 2.1.2 cpe:2.3:a:mortbay:jetty:2.1.2:*:*:*:*:*:*:*
mortbay jetty 2.1.3 cpe:2.3:a:mortbay:jetty:2.1.3:*:*:*:*:*:*:*
mortbay jetty 2.1.4 cpe:2.3:a:mortbay:jetty:2.1.4:*:*:*:*:*:*:*
mortbay jetty 2.1.5 cpe:2.3:a:mortbay:jetty:2.1.5:*:*:*:*:*:*:*
mortbay jetty 2.1.6 cpe:2.3:a:mortbay:jetty:2.1.6:*:*:*:*:*:*:*
mortbay jetty 2.1.7 cpe:2.3:a:mortbay:jetty:2.1.7:*:*:*:*:*:*:*
mortbay jetty 2.1.b0 cpe:2.3:a:mortbay:jetty:2.1.b0:*:*:*:*:*:*:*
mortbay jetty 2.1.b1 cpe:2.3:a:mortbay:jetty:2.1.b1:*:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:alpha0:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:alpha1:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:beta0:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:beta1:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:beta2:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:beta3:*:*:*:*:*:*
mortbay jetty 2.2 cpe:2.3:a:mortbay:jetty:2.2:beta4:*:*:*:*:*:*
mortbay jetty 2.2.0 cpe:2.3:a:mortbay:jetty:2.2.0:*:*:*:*:*:*:*
mortbay jetty 2.2.1 cpe:2.3:a:mortbay:jetty:2.2.1:*:*:*:*:*:*:*
mortbay jetty 2.2.2 cpe:2.3:a:mortbay:jetty:2.2.2:*:*:*:*:*:*:*
mortbay jetty 2.2.3 cpe:2.3:a:mortbay:jetty:2.2.3:*:*:*:*:*:*:*
mortbay jetty 2.2.4 cpe:2.3:a:mortbay:jetty:2.2.4:*:*:*:*:*:*:*
mortbay jetty 2.2.5 cpe:2.3:a:mortbay:jetty:2.2.5:*:*:*:*:*:*:*
mortbay jetty 2.2.6 cpe:2.3:a:mortbay:jetty:2.2.6:*:*:*:*:*:*:*
mortbay jetty 2.2.7 cpe:2.3:a:mortbay:jetty:2.2.7:*:*:*:*:*:*:*
mortbay jetty 2.2.8 cpe:2.3:a:mortbay:jetty:2.2.8:*:*:*:*:*:*:*
mortbay jetty 2.3.0 cpe:2.3:a:mortbay:jetty:2.3.0:*:*:*:*:*:*:*
mortbay jetty 2.3.0a cpe:2.3:a:mortbay:jetty:2.3.0a:*:*:*:*:*:*:*
mortbay jetty 2.3.1 cpe:2.3:a:mortbay:jetty:2.3.1:*:*:*:*:*:*:*
mortbay jetty 2.3.2 cpe:2.3:a:mortbay:jetty:2.3.2:*:*:*:*:*:*:*
mortbay jetty 2.3.3 cpe:2.3:a:mortbay:jetty:2.3.3:*:*:*:*:*:*:*
mortbay jetty 2.3.4 cpe:2.3:a:mortbay:jetty:2.3.4:*:*:*:*:*:*:*
mortbay jetty 2.3.5 cpe:2.3:a:mortbay:jetty:2.3.5:*:*:*:*:*:*:*
mortbay jetty 2.4.0 cpe:2.3:a:mortbay:jetty:2.4.0:*:*:*:*:*:*:*
mortbay jetty 2.4.1 cpe:2.3:a:mortbay:jetty:2.4.1:*:*:*:*:*:*:*
mortbay jetty 2.4.2 cpe:2.3:a:mortbay:jetty:2.4.2:*:*:*:*:*:*:*
mortbay jetty 2.4.3 cpe:2.3:a:mortbay:jetty:2.4.3:*:*:*:*:*:*:*
mortbay jetty 2.4.4 cpe:2.3:a:mortbay:jetty:2.4.4:*:*:*:*:*:*:*
mortbay jetty 2.4.5 cpe:2.3:a:mortbay:jetty:2.4.5:*:*:*:*:*:*:*
mortbay jetty 2.4.6 cpe:2.3:a:mortbay:jetty:2.4.6:*:*:*:*:*:*:*
mortbay jetty 2.4.7 cpe:2.3:a:mortbay:jetty:2.4.7:*:*:*:*:*:*:*
mortbay jetty 2.4.8 cpe:2.3:a:mortbay:jetty:2.4.8:*:*:*:*:*:*:*
mortbay jetty 2.4.9 cpe:2.3:a:mortbay:jetty:2.4.9:*:*:*:*:*:*:*
mortbay jetty 3.0 cpe:2.3:a:mortbay:jetty:3.0:*:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:*:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc1:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc2:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc3:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc4:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc5:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc6:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc7:*:*:*:*:*:*
mortbay jetty 3.0.0 cpe:2.3:a:mortbay:jetty:3.0.0:rc8:*:*:*:*:*:*
mortbay jetty 3.0.1 cpe:2.3:a:mortbay:jetty:3.0.1:*:*:*:*:*:*:*
mortbay jetty 3.0.2 cpe:2.3:a:mortbay:jetty:3.0.2:*:*:*:*:*:*:*
mortbay jetty 3.0.3 cpe:2.3:a:mortbay:jetty:3.0.3:*:*:*:*:*:*:*
mortbay jetty 3.0.4 cpe:2.3:a:mortbay:jetty:3.0.4:*:*:*:*:*:*:*

References for CVE-2011-4461

cvelogic Threat Intelligence