9.3

CVE-2020-36327: bundler

Modified
AliasesSUSE-SU-2025:1294-1RHSA-2022:0545RHSA-2022:0546
Published 29-04-2021Last modified 08-10-2026

Vulnerability summary

CVE-2020-36327 is a high (CVSS 9.3) vulnerability in bundler. EPSS estimates a 6.31% chance of exploitation in the next 30 days, higher than 93.6% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
6.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2github, reference

Advisory lineage

Upstream 0 · Downstream 10 · Related 1
MGASA-2021-0579RHSA-2021:3020RHSA-2021:3559RHSA-2021:3982RHSA-2022:0543RHSA-2022:0544

Timeline

  1. 29-04-2021
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every "Dependency Confusion" issue in every product.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

6.31%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 6.31% on 05-10-2026

05-10-202604-11-2026

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

2 found
  • githubUnverified

    Rubygems

    Maturity: poc

  • referenceUnverified

    Exploit Reference (zofrex.com)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

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

Suse15 products
  • rubygem-bundler&distro=SUSE Enterprise Storage 7.1< 2.2.34-150000.3.11.1
  • rubygem-bundler&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 2.2.34-150000.3.11.1
  • rubygem-bundler&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 2.2.34-150000.3.11.1
  • rubygem-bundler&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 2.2.34-150000.3.11.1
  • rubygem-bundler&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 2.2.34-150000.3.11.1
Redhat2 products
  • rubygem-bundler< 0:1.16.1-4.module+el8.5.0+13840+ec418553 | < 0:1.16.1-4.module+el8.4.0+14083+f9ece6dd | < 0:1.16.1-4.module+el8.2.0+14084+4fedcad5 | < 0:1.16.1-4.module+el8.1.0+14085+cd0ba992
  • rubygem-bundler-doc< 0:1.16.1-4.module+el8.5.0+13840+ec418553 | < 0:1.16.1-4.module+el8.4.0+14083+f9ece6dd | < 0:1.16.1-4.module+el8.2.0+14084+4fedcad5 | < 0:1.16.1-4.module+el8.1.0+14085+cd0ba992
Bundler1 product
  • bundler≥ 1.16.0, < 2.2.10 | ≥ 2.2.11, ≤ 2.2.16
Debian1 product
  • rubygems< 3.3.5-1
Fedoraproject1 product
Microsoft1 product
Opensuse1 product
  • rubygem-bundler&distro=openSUSE Leap 15.6< 2.2.34-150000.3.11.1
RubyGems1 product
  • bundler≥ 1.16.0, < 2.2.10 | ≥ 2.2.11, < 2.2.18
Ubuntu1 product
  • bundlerAll versions (No fix recorded)

9 vendors · 24 products

References

33 links
Show all 33 references