CVE-2011-5034

highpriority · attend · 69EPSS 0.806 · 100 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · functional

Likely / severe?

80.6% (100th) EPSS

CVSS 7.8 · high

Is it mine?

19 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-400US

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-2012MyBulletinBoard (MyBB) 1.1.5 - 'CLIENT-IP' SQL Injectionfunctional · exploit_db
auxiliary/dos/http/hashcollision_dosHashtable Collisionsfunctional · metasploit

affected products (19)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
apache geronimo≤ 2.2.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 1.0nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 1.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 1.1.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 1.2nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.0.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.0.2nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.1nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.2nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.3nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.4nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.5nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.6nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.7nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.1.8nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
apache geronimo= 2.2nvdUScpe:2.3:a:apache:geronimo:*:*:*:*:*:*:*:*
Maven org.apache.geronimo:geronimo< 2.2.1osvUSpkg:maven/org.apache.geronimo/geronimo

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-v3h8-rw48-h4grApache Geronimo Hash Collisions Cause DoS2022-05-13ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2011-12-30modified 2026-06-16

related (25,193)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-88771US	critical9.8OT critical	82.2% (100th)	KEV	2026-09-27
Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS,…
CVE-2026-93952US	—OT critical	1.38% (72nd)	KEV	2026-09-22
VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successf…
CVE-2026-12569US	critical9.8OT critical	46.0% (99th)	KEV	2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of u…
CVE-2026-34910US	—OT critical	90.0% (100th)	KEV	2026-05-22
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
CVE-2026-6973US	—OT critical	34.5% (98th)	KEV	2026-05-07
An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remotely authenticated user with administrative access to achieve remote code…

+25188 more

references (51)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan