synced 11 MIN AGO
01 Record

CVE-2026-33210

Ruby JSON has a format string injection vulnerability

HighPUBLISHEDCNA: GitHub_M
CNA base score8.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
View raw JSON

02 Description

Ruby JSON has a format string injection vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.87% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 58.6% of scored records. A rank, not a probability.
NVD base score
8.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Modified. NVD last modified this record on 2026-08-21.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-20 22:57Z7 MO AGO
Last updated
2026-08-21 12:13Z2 MO AGO
Reserved
2026-03-17
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-134Use of Externally-Controlled Format StringBase
Data version
5.2
Document digest
eb6c1463b7ac02c1731ebe1410d7dca2c2255c261da3824e5d0f1adba084da88

05 Affected products

VendorProductVersionsPlatforms
rubyjson>= 2.14.0, < 2.15.2.1, >= 2.16.0, < 2.17.1.2, >= 2.18.0, < 2.19.2—

06 References

07 Fixed in

AlmaLinux 9

  • ruby
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-bundled-gems
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-default-gems
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-devel
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-doc
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-libs
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • rubygem-bigdecimal
    Fixed in 4.0.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-bundler
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b
  • rubygem-io-console
    Fixed in 0.8.2-32.module_el9.8.0+251+5fdbd96b
  • rubygem-irb
    Fixed in 1.16.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-json
    Fixed in 2.18.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-minitest
    Fixed in 6.0.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-mysql2
    Fixed in 0.5.7-1.module_el9.8.0+232+50f6dd36
  • rubygem-mysql2-doc
    Fixed in 0.5.7-1.module_el9.8.0+232+50f6dd36
  • rubygem-pg
    Fixed in 1.6.3-1.module_el9.8.0+232+50f6dd36
  • rubygem-pg-doc
    Fixed in 1.6.3-1.module_el9.8.0+232+50f6dd36
  • rubygem-power_assert
    Fixed in 3.0.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-psych
    Fixed in 5.3.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-racc
    Fixed in 1.8.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rake
    Fixed in 13.3.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rbs
    Fixed in 3.10.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rdoc
    Fixed in 7.0.3-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rexml
    Fixed in 3.4.4-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rss
    Fixed in 0.3.2-32.module_el9.8.0+251+5fdbd96b
  • rubygem-test-unit
    Fixed in 3.7.5-32.module_el9.8.0+251+5fdbd96b
  • rubygem-typeprof
    Fixed in 0.31.1-32.module_el9.8.0+251+5fdbd96b
  • rubygems
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b
  • rubygems-devel
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • ruby4.0
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-devel
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-doc
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-rubygem-mysql2
    Fixed in 0.5.7-34.el10_2
  • ruby4.0-rubygem-pg
    Fixed in 1.6.3-34.el10_2

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • ruby
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-bundled-gems
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-default-gems
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-devel
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-doc
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • ruby-libs
    Fixed in 4.0.3-32.module_el9.8.0+251+5fdbd96b
  • rubygem-bigdecimal
    Fixed in 4.0.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-bundler
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b
  • rubygem-io-console
    Fixed in 0.8.2-32.module_el9.8.0+251+5fdbd96b
  • rubygem-irb
    Fixed in 1.16.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-json
    Fixed in 2.18.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-minitest
    Fixed in 6.0.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-mysql2
    Fixed in 0.5.7-1.module_el9.8.0+232+50f6dd36
  • rubygem-mysql2-doc
    Fixed in 0.5.7-1.module_el9.8.0+232+50f6dd36
  • rubygem-pg
    Fixed in 1.6.3-1.module_el9.8.0+232+50f6dd36
  • rubygem-pg-doc
    Fixed in 1.6.3-1.module_el9.8.0+232+50f6dd36
  • rubygem-power_assert
    Fixed in 3.0.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-psych
    Fixed in 5.3.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-racc
    Fixed in 1.8.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rake
    Fixed in 13.3.1-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rbs
    Fixed in 3.10.0-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rdoc
    Fixed in 7.0.3-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rexml
    Fixed in 3.4.4-32.module_el9.8.0+251+5fdbd96b
  • rubygem-rss
    Fixed in 0.3.2-32.module_el9.8.0+251+5fdbd96b
  • rubygem-test-unit
    Fixed in 3.7.5-32.module_el9.8.0+251+5fdbd96b
  • rubygem-typeprof
    Fixed in 0.31.1-32.module_el9.8.0+251+5fdbd96b
  • rubygems
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b
  • rubygems-devel
    Fixed in 4.0.6-32.module_el9.8.0+251+5fdbd96b

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • ruby4.0
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-devel
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-doc
    Fixed in 4.0.3-34.el10_2
  • ruby4.0-rubygem-mysql2
    Fixed in 0.5.7-34.el10_2
  • ruby4.0-rubygem-pg
    Fixed in 1.6.3-34.el10_2

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • ruby-json
    Fixed in 2.19.2+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • ruby-json
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.