7.5

CVE-2009-5147: ruby-lang ruby Improper Input Validation

Modified
AliasesUBUNTU-CVE-2009-5147DLA-299-1DLA-300-1
Published 29-03-2017Last modified 07-08-2024

Vulnerability summary

CVE-2009-5147 is a high (CVSS 7.5) Improper Input Validation vulnerability in ruby-lang ruby. EPSS estimates a 7.83% chance of exploitation in the next 30 days, higher than 94.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.3 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
7.83%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 2
RHSA-2018:0583RHSA-2026:7305RHSA-2026:7307RHSA-2026:8838SUSE-SU-2015:1889-1USN-3365-1

Timeline

  1. 29-03-2017
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

7.83%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

Increase +0.06 pp

From 7.77% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • ruby1.8< 1.8.7.302-2squeeze5
  • ruby1.9.1< 1.9.2.0-2+deb6u7
Ruby-lang1 product
  • rubyEOL1.8.0 | 1.9.0 | 1.9.2 | 1.9.3 | 2.0.0 | 2.0.0:p195 | 2.0.0:p247 | 2.0.0:p353 | 2.0.0:p481 | 2.0.0:p576 | 2.0.0:p594 | 2.0.0:p598 | 2.0.0:p643 | 2.0.0:p645 | 2.0.0:p647 | 2.1.0 | 2.1.1 | 2.1.2 | 2.1.3 | 2.1.4 | 2.1.5 | 2.1.6 | 2.1.7
Ubuntu1 product
  • ruby1.9.1< 1.9.3.484-2ubuntu1.3

3 vendors · 4 products

References

10 links