CVE-2026-33170

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Source
https://cve.org/CVERecord?id=CVE-2026-33170
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33170.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33170
Aliases
Downstream
Related
Published
2026-03-23T23:09:48.923Z
Modified
2026-04-02T13:27:25.675421Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Rails Active Support has a possible XSS vulnerability in SafeBuffer#%
Details

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer#% does not propagate the @html_unsafe flag to the newly created buffer. If a SafeBuffer is mutated in place (e.g. via gsub!) and then formatted with % using untrusted arguments, the result incorrectly reports html_safe? == true, bypassing ERB auto-escaping and possibly leading to XSS. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33170.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ]
}
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
v0.14.2
v0.14.3
v0.14.4
v0.9.1
v0.9.2
v0.9.3
v0.9.4
v0.9.4.1
v0.9.5
v1.*
v1.0.0
v1.1.0
v1.1.0_RC1
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.2.0
v1.2.0_RC1
v1.2.0_RC2
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v2.*
v2.0.0
v2.0.0_PR
v2.0.0_RC1
v2.0.0_RC2
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.1.0
v2.1.0_RC1
v2.1.1
v2.1.2
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.3.0
v2.3.1
v2.3.10
v2.3.11
v2.3.12
v2.3.13
v2.3.14
v2.3.15
v2.3.16
v2.3.17
v2.3.18
v2.3.2
v2.3.2.1
v2.3.3
v2.3.3.1
v2.3.4
v2.3.5
v2.3.6
v2.3.7
v2.3.8
v2.3.9
v2.3.9.pre
v3.*
v3.0.0
v3.0.0.beta.2
v3.0.0.beta.3
v3.0.0.beta1
v3.0.0.beta2
v3.0.0.beta3
v3.0.0.beta4
v3.0.0_RC
v3.0.0_RC2
v3.0.1
v3.0.10
v3.0.10.rc1
v3.0.11
v3.0.12
v3.0.12.rc1
v3.0.13
v3.0.13.rc1
v3.0.14
v3.0.15
v3.0.16
v3.0.17
v3.0.18
v3.0.19
v3.0.2
v3.0.20
v3.0.3
v3.0.4
v3.0.4.rc1
v3.0.5
v3.0.5.rc1
v3.0.6
v3.0.6.rc1
v3.0.6.rc2
v3.0.7
v3.0.7.rc1
v3.0.7.rc2
v3.0.8
v3.0.8.rc1
v3.0.8.rc2
v3.0.8.rc3
v3.0.8.rc4
v3.0.9
v3.0.9.rc1
v3.0.9.rc2
v3.0.9.rc3
v3.0.9.rc4
v3.0.9.rc5
v3.1.0
v3.1.0.beta1
v3.1.0.rc1
v3.1.0.rc2
v3.1.0.rc3
v3.1.0.rc4
v3.1.0.rc5
v3.1.0.rc6
v3.1.0.rc7
v3.1.0.rc8
v3.1.1
v3.1.1.rc1
v3.1.1.rc2
v3.1.1.rc3
v3.1.10
v3.1.11
v3.1.12
v3.1.2
v3.1.2.rc1
v3.1.2.rc2
v3.1.3
v3.1.4
v3.1.4.rc1
v3.1.5
v3.1.5.rc1
v3.1.6
v3.1.7
v3.1.8
v3.1.9
v3.2.0
v3.2.0.rc1
v3.2.0.rc2
v3.2.1
v3.2.10
v3.2.11
v3.2.12
v3.2.13
v3.2.13.rc1
v3.2.13.rc2
v3.2.14
v3.2.14.rc1
v3.2.14.rc2
v3.2.15
v3.2.15.rc1
v3.2.15.rc2
v3.2.15.rc3
v3.2.16
v3.2.17
v3.2.18
v3.2.19
v3.2.2
v3.2.2.rc1
v3.2.20
v3.2.21
v3.2.22
v3.2.22.1
v3.2.22.2
v3.2.22.3
v3.2.22.4
v3.2.22.5
v3.2.3
v3.2.3.rc1
v3.2.3.rc2
v3.2.4
v3.2.4.rc1
v3.2.5
v3.2.6
v3.2.7
v3.2.7.rc1
v3.2.8
v3.2.8.rc1
v3.2.8.rc2
v3.2.9
v3.2.9.rc1
v3.2.9.rc2
v3.2.9.rc3
v4.*
v4.0.0
v4.0.0.beta1
v4.0.0.rc1
v4.0.0.rc2
v4.0.1
v4.0.1.rc1
v4.0.1.rc2
v4.0.1.rc3
v4.0.1.rc4
v4.0.10
v4.0.10.rc1
v4.0.10.rc2
v4.0.11
v4.0.11.1
v4.0.12
v4.0.13
v4.0.13.rc1
v4.0.2
v4.0.3
v4.0.4
v4.0.4.rc1
v4.0.5
v4.0.6
v4.0.6.rc1
v4.0.6.rc2
v4.0.6.rc3
v4.0.7
v4.0.8
v4.0.9
v4.1.0
v4.1.0.beta1
v4.1.0.beta2
v4.1.0.rc1
v4.1.0.rc2
v4.1.1
v4.1.10
v4.1.10.rc1
v4.1.10.rc2
v4.1.10.rc3
v4.1.10.rc4
v4.1.11
v4.1.12
v4.1.12.rc1
v4.1.13
v4.1.13.rc1
v4.1.14
v4.1.14.1
v4.1.14.2
v4.1.14.rc1
v4.1.14.rc2
v4.1.15
v4.1.15.rc1
v4.1.16
v4.1.16.rc1
v4.1.2
v4.1.2.rc1
v4.1.2.rc2
v4.1.2.rc3
v4.1.3
v4.1.4
v4.1.5
v4.1.6
v4.1.6.rc1
v4.1.6.rc2
v4.1.7
v4.1.7.1
v4.1.8
v4.1.9
v4.1.9.rc1
v4.2.0
v4.2.0.beta1
v4.2.0.beta2
v4.2.0.beta3
v4.2.0.beta4
v4.2.0.rc1
v4.2.0.rc2
v4.2.0.rc3
v4.2.1
v4.2.1.rc1
v4.2.1.rc2
v4.2.1.rc3
v4.2.1.rc4
v4.2.10
v4.2.10.rc1
v4.2.11
v4.2.11.1
v4.2.11.2
v4.2.11.3
v4.2.2
v4.2.3
v4.2.3.rc1
v4.2.4
v4.2.4.rc1
v4.2.5
v4.2.5.1
v4.2.5.2
v4.2.5.rc1
v4.2.5.rc2
v4.2.6
v4.2.6.rc1
v4.2.7
v4.2.7.1
v4.2.7.rc1
v4.2.8
v4.2.8.rc1
v4.2.9
v4.2.9.rc1
v4.2.9.rc2
v5.*
v5.0.0
v5.0.0.1
v5.0.0.beta1
v5.0.0.beta1.1
v5.0.0.beta2
v5.0.0.beta3
v5.0.0.beta4
v5.0.0.rc1
v5.0.0.rc2
v5.0.1
v5.0.1.rc1
v5.0.1.rc2
v5.0.2
v5.0.2.rc1
v5.0.3
v5.0.4
v5.0.4.rc1
v5.0.5
v5.0.5.rc1
v5.0.5.rc2
v5.0.6
v5.0.6.rc1
v5.0.7
v5.0.7.1
v5.0.7.2
v5.1.0
v5.1.0.beta1
v5.1.0.rc1
v5.1.0.rc2
v5.1.1
v5.1.2
v5.1.2.rc1
v5.1.3
v5.1.3.rc1
v5.1.3.rc2
v5.1.3.rc3
v5.1.4
v5.1.4.rc1
v5.1.5
v5.1.5.rc1
v5.1.6
v5.1.6.1
v5.1.6.2
v5.1.7
v5.1.7.rc1
v5.2.0
v5.2.0.beta1
v5.2.0.beta2
v5.2.0.rc1
v5.2.0.rc2
v5.2.1
v5.2.1.1
v5.2.1.rc1
v5.2.2
v5.2.2.1
v5.2.2.rc1
v5.2.3
v5.2.3.rc1
v5.2.4
v5.2.4.1
v5.2.4.2
v5.2.4.3
v5.2.4.4
v5.2.4.5
v5.2.4.6
v5.2.4.rc1
v5.2.5
v5.2.6
v5.2.6.1
v5.2.6.2
v5.2.6.3
v5.2.7
v5.2.7.1
v5.2.8
v5.2.8.1
v6.*
v6.0.0
v6.0.0.beta1
v6.0.0.beta2
v6.0.0.beta3
v6.0.0.rc1
v6.0.0.rc2
v6.0.1
v6.0.1.rc1
v6.0.2
v6.0.2.1
v6.0.2.2
v6.0.2.rc1
v6.0.2.rc2
v6.0.3
v6.0.3.1
v6.0.3.2
v6.0.3.3
v6.0.3.4
v6.0.3.5
v6.0.3.6
v6.0.3.7
v6.0.3.rc1
v6.0.4
v6.0.4.1
v6.0.4.2
v6.0.4.3
v6.0.4.4
v6.0.4.5
v6.0.4.6
v6.0.4.7
v6.0.4.8
v6.0.5
v6.0.5.1
v6.0.6
v6.0.6.1
v6.1.0
v6.1.0.rc1
v6.1.0.rc2
v6.1.1
v6.1.2
v6.1.2.1
v6.1.3
v6.1.3.1
v6.1.3.2
v6.1.4
v6.1.4.1
v6.1.4.2
v6.1.4.3
v6.1.4.4
v6.1.4.5
v6.1.4.6
v6.1.4.7
v6.1.5
v6.1.5.1
v6.1.6
v6.1.6.1
v6.1.7
v6.1.7.1
v6.1.7.10
v6.1.7.2
v6.1.7.3
v6.1.7.4
v6.1.7.5
v6.1.7.6
v6.1.7.7
v6.1.7.8
v6.1.7.9
v7.*
v7.0.0
v7.0.0.alpha1
v7.0.0.alpha2
v7.0.0.rc1
v7.0.0.rc2
v7.0.0.rc3
v7.0.1
v7.0.10
v7.0.2
v7.0.2.1
v7.0.2.2
v7.0.2.3
v7.0.2.4
v7.0.3
v7.0.3.1
v7.0.4
v7.0.4.1
v7.0.4.2
v7.0.4.3
v7.0.5
v7.0.5.1
v7.0.6
v7.0.7
v7.0.7.1
v7.0.7.2
v7.0.8
v7.0.8.1
v7.0.8.2
v7.0.8.3
v7.0.8.4
v7.0.8.5
v7.0.8.6
v7.0.8.7
v7.0.9
v7.1.0
v7.1.0.beta1
v7.1.0.rc1
v7.1.0.rc2
v7.1.1
v7.1.2
v7.1.3
v7.1.3.1
v7.1.3.2
v7.1.3.3
v7.1.3.4
v7.1.4
v7.1.4.1
v7.1.4.2
v7.1.5
v7.1.5.1
v7.1.5.2
v7.1.6
v7.2.0
v7.2.0.beta1
v7.2.0.beta2
v7.2.0.beta3
v7.2.0.rc1
v7.2.1
v7.2.1.1
v7.2.1.2
v7.2.2
v7.2.2.1
v7.2.2.2
v7.2.3
v8.*
v8.0.0
v8.0.0.1
v8.0.0.alpha1
v8.0.0.alpha2
v8.0.0.alpha3
v8.0.0.alpha4
v8.0.0.alpha5
v8.0.0.alpha6
v8.0.0.alpha7
v8.0.0.alpha8
v8.0.0.alpha9
v8.0.0.beta1
v8.0.0.rc1
v8.0.0.rc2
v8.0.1
v8.0.2
v8.0.2.1
v8.0.3
v8.0.4
v8.0.4.1
v8.0.5
v8.1.0
v8.1.0.beta1
v8.1.0.rc1
v8.1.1
v8.1.2
v8.1.2.1
v8.1.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33170.json"