CVE-2011-4815: ruby-lang ruby Improper Input Validation
Vulnerability summary
CVE-2011-4815 is a high (CVSS 7.8) Improper Input Validation vulnerability in ruby-lang ruby. EPSS estimates a 4.06% chance of exploitation in the next 30 days, higher than 90.6% of scored vulnerabilities.
Not severe (CVSS 7.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5Timeline
- 30-12-2011PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
4.06%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.06% on 04-10-2026
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.
Redhat10 products
- ruby< 0:1.8.7.352-4.el6_2
- ruby-debuginfo< 0:1.8.7.352-4.el6_2
- ruby-devel< 0:1.8.7.352-4.el6_2
- ruby-docs< 0:1.8.7.352-4.el6_2
- ruby-irb< 0:1.8.7.352-4.el6_2
Ruby-lang1 product
- ruby≤ 1.8.7-p352 | 1.8.7-p299 | 1.8.7-p302 | 1.8.7-p330 | 1.8.7-p334
2 vendors · 11 products
References
23 links- www.nruns.com/_downloads/advisory28122011.pdfX Refsource MISC
Show all 23 references
- support.apple.com/kb/HT5281X Refsource CONFIRM
