Is CVE-2011-4461 in the CISA KEV catalog?

No. CVE-2011-4461 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4461?

CVE-2011-4461 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2011-4461?

CVE-2011-4461 has an EPSS score of 5.04% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2011-4461?

No published fix for CVE-2011-4461 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2011-4461

MEDIUMEPSS 91th pctl

5.3

CVSS v3

NVD

Description

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.

CWE-310Cryptographic Issues

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

5.04%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Government Resource1

kb.cert.org

Other references13

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.