How severe is CVE-2011-5034?

CVE-2011-5034 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-5034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 81% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-5034?

CVE-2011-5034 primarily affects Apache Geronimo. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-5034?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-5034 published?

CVE-2011-5034 was published on 2011-12-30 and last updated on 2026-06-16.

CVE-2011-5034

CVE-2011-5034 is a high-severity vulnerability in Apache Geronimo with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 81% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 81% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apache Geronimo
Published: 2011-12-30
Last modified: 2026-06-16

Description

Apache Geronimo 2.2.1 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. NOTE: this might overlap CVE-2011-4461.

Frequently asked questions

What is CVE-2011-5034?: Apache Geronimo 2.2.1 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. NOTE: this might overlap CVE-2011-4461.
How severe is CVE-2011-5034?: CVE-2011-5034 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-5034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 81% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5034?: CVE-2011-5034 primarily affects Apache Geronimo. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5034?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-5034 published?: CVE-2011-5034 was published on 2011-12-30 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:1.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:1.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:1.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.1.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:geronimo:2.2:*:*:*:*:*:*:*

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