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MEDIUM severity

CVE-2025-32027 — yii

MEDIUMFix: yiisoft/yii@d386d73

CVE-2025-32027 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in yiisoft/yii. A fix is available for yiisoft/yii — see the affected versions and patch details below.

Yii does not prevent XSS in scenarios where fallback error renderer is used

Also known asGHSA-7r2v-8wxr-3ch5
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-32027.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk+0.01%
Lower risk than most CVEs16th percentile — riskier than 16% of all scored CVEsHighest risk
0.00%0.28%0.56%0.84%0.2%0.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘yiisoft/yii

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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

If you have any questions or comments about this advisory, contact us through security form.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistyiisoft/yiiall versions1.1.31composer require yiisoft/yii:^1.1.31

Affected Products

1 product · 1 configurations
Application
yiiyiiframework
< 1.1.31
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for yiisoft/yii, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update yiisoft/yii to 1.1.31 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-32027 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### 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).
O3 Security · Impact-Aware SCA

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CVE-2025-32027: yii XSS — Fixed in 1.1.31