CVE-2026-52889

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Source
https://cve.org/CVERecord?id=CVE-2026-52889
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52889.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-52889
Aliases
Published
2026-08-19T14:57:12Z
Modified
2026-09-12T03:30:35Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Formie: Server-Side Template Injection in Formie Hidden field defaults
Details

Formie is a Craft CMS plugin for creating forms. Prior to 3.1.27, Formie can pass request-derived Hidden field defaults such as HTTP User Agent, Referer URL, Current URL, Current URL without Query String, Query Parameter, and Cookie Value to Craft's Twig rendering layer during front-end form rendering. An unauthenticated attacker can place Twig syntax in one of these request-controlled inputs when a public form contains an affected Hidden field. Hidden::getFrontEndInputOptions() then assigns the value to defaultValue and calls renderString, causing server-side template evaluation rather than treating the request data as a plain string. Depending on the Craft site configuration and available Twig capabilities, exploitation can disclose sensitive information, modify application state, or achieve remote code execution. This issue is fixed in version 3.1.27.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1336"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52889.json"
}
References

Affected packages

Git / github.com/verbb/formie

Affected ranges

Type
GIT
Repo
https://github.com/verbb/formie
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d3b9d15290405e484e3b5c91c5d8fab93047f9b2
Fixed
64fdb7ff979661fad59e45c0db69670e879cf286
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.1.27"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.1
1.0.2
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
1.0.9.1
1.1.0
1.1.1
1.1.1.1
1.2.0
1.2.1
1.2.10
1.2.11
1.2.12
1.2.13
1.2.14
1.2.15
1.2.16
1.2.17
1.2.18
1.2.19
1.2.2
1.2.20
1.2.21
1.2.22
1.2.23
1.2.23.1
1.2.24
1.2.25
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.7.1
1.2.8
1.2.9
1.4.0
1.4.0.1
1.4.1
1.4.10
1.4.11
1.4.12
1.4.13
1.4.14
1.4.15
1.4.16
1.4.17
1.4.18
1.4.19
1.4.2
1.4.20
1.4.21
1.4.21.1
1.4.22
1.4.3
1.4.4
1.4.5
1.4.6
1.4.7
1.4.8
1.4.9
1.5.0
1.5.1
1.5.10
1.5.2
1.5.3
1.5.4
1.5.5
1.5.6
1.5.7
1.5.8
1.5.9
2.*
2.0.0
2.0.0-beta.1
2.0.0-beta.13
2.0.0-beta.14
2.0.0-beta.15
2.0.0-beta.16
2.0.0-beta.2
2.0.0-beta.3
2.0.0-beta.4
2.0.0-beta.5
2.0.0-beta.6
2.0.0-beta.8
2.0.0-beta.9
2.0.1
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.17
2.0.19
2.0.2
2.0.20
2.0.21
2.0.22
2.0.23
2.0.23.1
2.0.24
2.0.25
2.0.25.1
2.0.26
2.0.27
2.0.27.1
2.0.28
2.0.29
2.0.3
2.0.30
2.0.31
2.0.32
2.0.33
2.0.34
2.0.34.1
2.0.35
2.0.36
2.0.37
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
3.*
3.0.0
3.0.0-beta.1
3.0.0-beta.10
3.0.0-beta.11
3.0.0-beta.12
3.0.0-beta.13
3.0.0-beta.14
3.0.0-beta.15
3.0.0-beta.16
3.0.0-beta.17
3.0.0-beta.18
3.0.0-beta.19
3.0.0-beta.2
3.0.0-beta.20
3.0.0-beta.3
3.0.0-beta.4
3.0.0-beta.5
3.0.0-beta.7
3.0.0-beta.8
3.0.0-beta.9
3.0.1
3.0.10
3.0.11
3.0.12
3.0.13
3.0.14
3.0.15
3.0.16
3.0.17
3.0.18
3.0.19
3.0.2
3.0.20
3.0.21
3.0.22
3.0.23
3.0.24
3.0.25
3.0.26
3.0.27
3.0.28
3.0.29
3.0.3
3.0.30
3.0.31
3.0.32
3.0.4
3.0.5
3.0.6
3.0.7
3.0.8
3.0.9
3.1.0
3.1.1
3.1.10
3.1.11
3.1.12
3.1.13
3.1.14
3.1.15
3.1.16
3.1.17
3.1.18
3.1.19
3.1.2
3.1.20
3.1.21
3.1.22
3.1.23
3.1.24
3.1.25
3.1.26
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52889.json"