CVE-2025-32027: Yiisoft/yii Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-7r2v-8wxr-3ch5
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2025-32027 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Yiisoft/yii libraries in the Packagist ecosystem. The issue involves yii does not prevent xss in scenarios where fallback error renderer is used. Remediation is available by upgrading affected packages to version 1.1.31.

CVE-2025-32027 at a Glance

CVE Identifier CVE-2025-32027
GHSA Identifier GHSA-7r2v-8wxr-3ch5
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Yiisoft/yii
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-32027

To remediate this vulnerability, upgrade all affected Yiisoft/yii dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

yiisoft/yii fixed: 1.1.31 
Upgrade yiisoft/yii to 1.1.31
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for yiisoft/yii

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-32027, inspect your project dependencies for Yiisoft/yii:

inspect dependencies for yiisoft/yii

Analyze the terminal output to locate any version of Yiisoft/yii in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.31), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Yiisoft/yii, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Affected versions of yiisoft/yii are vulnerable to Reflected XSS in specific scenarios where the fallback error renderer is used. ### Patches Upgrade yiisoft/yii to version 1.1.31 or higher. ### References - [Git commit](https://github.com/yiisoft/yii/commit/d386d737861c9014269b7ed8c36c65eadb387368) If you have any questions or comments about this advisory, [contact us through security form](https://www.yiiframework.com/security).

CVE-2025-32027 Affected Yiisoft/yii Versions

1 component(s)
Fixed Versions:
1.1.31
Product / Package Ecosystem Affected Versions Fixed Version
yiisoft/yii
 Packagist
< 1.1.31
1.1.31

References

GitHub Advisory / Wiki ADVISORY
https://github.com/yiisoft/yii/security/advisories/GHSA-7r2v-8wxr-3ch5
NVD — CVE-2025-32027 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-32027
Security Fix Commit FIX COMMIT
https://github.com/yiisoft/yii/commit/d386d737861c9014269b7ed8c36c65eadb387368
Yiisoft/yii Source Repository REPOSITORY
https://github.com/yiisoft/yii

Frequently Asked Questions

What is CVE-2025-32027?
CVE-2025-32027 is a security vulnerability in Yiisoft/yii involving Yii does not prevent XSS in scenarios where fallback error renderer is used under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Yiisoft/yii versions are affected?
Affected versions include releases prior to 1.1.31 across affected packages: yiisoft/yii.
What version fixes CVE-2025-32027?
Upgrading to 1.1.31 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yiisoft/yii affected?
Yes, yiisoft/yii is affected in releases prior to 1.1.31. Upgrade your dependency to 1.1.31 or later.
What is the CVSS score of CVE-2025-32027?
CVE-2025-32027 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2025-32027?
CVE-2025-32027 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-32027?
Run the dependency tree command: 'inspect dependencies for yiisoft/yii'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7r2v-8wxr-3ch5",
  "modified" : "2025-04-11T14:05:18Z",
  "published" : "2025-04-11T14:05:18Z",
  "aliases" : [ "CVE-2025-32027" ],
  "summary" : "Yii does not prevent XSS in scenarios where fallback error renderer is used",
  "details" : "### Impact\nAffected versions of yiisoft/yii are vulnerable to Reflected XSS in specific scenarios where the fallback error renderer is used.\n\n### Patches\nUpgrade yiisoft/yii to version 1.1.31 or higher.\n\n### References\n- [Git commit](https://github.com/yiisoft/yii/commit/d386d737861c9014269b7ed8c36c65eadb387368)\n\nIf you have any questions or comments about this advisory, [contact us through security form](https://www.yiiframework.com/security).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "yiisoft/yii"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.31"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii/security/advisories/GHSA-7r2v-8wxr-3ch5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-32027"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii/commit/d386d737861c9014269b7ed8c36c65eadb387368"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/yiisoft/yii"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-11T14:05:18Z",
    "nvd_published_at" : "2025-04-10T15:16:05Z"
  }
}