CVE-2011-5036: rack_project rack Cryptographic Issues
Vulnerability summary
CVE-2011-5036 is a medium (CVSS 5.0) Cryptographic Issues vulnerability in rack_project rack. EPSS estimates a 3.87% chance of exploitation in the next 30 days, higher than 90.2% of scored vulnerabilities.
Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 30-12-2011PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
3.87%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.87% on 05-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- ruby-rack< 1.4.0-1
Org.jruby1 product
- jruby-parent< 1.6.5.1
Rack_project1 product
- rack≤ 1.1.0 | 1.2.0 | 1.2.1 | 1.2.2 | 1.2.3 | 1.2.4 | 1.3.0 | 1.3.1 | 1.3.2 | 1.3.3 | 1.3.4 | 1.3.5
RubyGems1 product
- rack< 1.1.3 | ≥ 1.2.0, < 1.2.5 | ≥ 1.3.0, < 1.3.6
4 vendors · 4 products
