CVE-2026-33169

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Source
https://cve.org/CVERecord?id=CVE-2026-33169
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33169.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33169
Aliases
Downstream
Related
Published
2026-03-23T23:07:07.630Z
Modified
2026-04-10T05:42:38.223383Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Rails Active Support has a possible ReDoS vulnerability in number_to_delimited
Details

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. NumberToDelimitedConverter uses a lookahead-based regular expression with gsub! to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and gsub! can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1333",
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33169.json"
}
References

Affected packages

Git / github.com/rails/rails

Affected ranges

Type
GIT
Repo
https://github.com/rails/rails
Events
Introduced
80827ca7ff33ca3026f2c74fe8249ccc6f513318
Fixed
1db4b89687cc18311fc3f92623136705df24e671
Database specific 
{
    "versions": [
        {
            "introduced": "8.1.0.beta1"
        },
        {
            "fixed": "8.1.2.1"
        }
    ]
}
Type
GIT
Repo
https://github.com/rails/rails
Events
Introduced
72bc36fb47aa3a9b10149ecefc1f344d7b028d79
Fixed
a79efed95797b196575a98845dc989e3106a9acb
Database specific 
{
    "versions": [
        {
            "introduced": "8.0.0.beta1"
        },
        {
            "fixed": "8.0.4.1"
        }
    ]
}
Type
GIT
Repo
https://github.com/rails/rails
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ba76fca032a66f3716ca8a661c9ddb006acaf885
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.2.3.1"
        }
    ]
}

Affected versions

v0.*
v0.10.0
v0.10.1
v0.11.0
v0.11.1
v0.12.0
v0.13.0
v0.13.1
v0.14.1
v0.14.3
v0.9.1
v0.9.2
v0.9.3
v0.9.4
v0.9.4.1
v0.9.5
v1.*
v1.1.0
v1.1.0_RC1
v1.1.1
v2.*
v2.0.0
v2.0.0_PR
v2.0.0_RC1
v2.0.0_RC2
v2.0.1
v3.*
v3.0.0.beta.3
v3.0.0.beta3
v3.1.0.beta1
v3.1.0.rc1
v3.2.0.rc1
v4.*
v4.0.0.beta1
v4.0.0.rc1
v4.2.0.beta1
v5.*
v5.0.0.beta1
v5.0.0.beta2
v5.0.0.beta4
v5.1.0.beta1
v6.*
v6.0.0.beta1
v6.0.0.beta2
v6.1.0.rc1
v7.*
v7.0.0.alpha1
v7.0.0.alpha2
v7.1.0.beta1
v7.2.0.beta1
v7.2.0.beta2
v7.2.0.beta3
v7.2.0.rc1
v7.2.1
v7.2.2
v7.2.3
v8.*
v8.0.0
v8.0.0.beta1
v8.0.0.rc1
v8.0.0.rc2
v8.0.1
v8.0.2
v8.0.3
v8.0.4
v8.1.0
v8.1.0.beta1
v8.1.0.rc1
v8.1.1
v8.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33169.json"