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Not in CISA KEV
HIGH severity

CVE-2023-47130 — yii

HIGHFix: yiisoft/yii@37142be

CVE-2023-47130 is a high-severity (CVSS 8.1) Deserialization of Untrusted Data vulnerability in yiisoft/yii. A fix is available for yiisoft/yii — see the affected versions and patch details below.

Unsafe deserialization of user data in yiisoft/yii

Also known asGHSA-mw2w-2hj2-fg8q
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • 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-2023-47130.

EPSS Exploitation Probability

via FIRST.org ↗
3.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk
2.65%3.02%3.39%3.75%3.3%3.1%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 Remote Code Execution (RCE) if the application calls unserialize() on arbitrary user input.

Patches

Upgrade yiisoft/yii to version 1.1.29 or higher.

For more information

See the following links for more details:

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 versions1.1.29composer require yiisoft/yii:^1.1.29

Affected Products

1 product · 1 configurations
Application
yiiyiiframework
< 1.1.29
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 1.1.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-47130 is resolved across your whole dependency graph.

  3. Workarounds

    Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

### Impact Affected versions of `yiisoft/yii` are vulnerable to Remote Code Execution (RCE) if the application calls `unserialize()` on arbitrary user input. ### Patches Upgrade `yiisoft/yii` to version 1.1.29 or higher. ### For more information See the following links for more details: - [Git commit](https://github.com/yiisoft/yii/commit/37142be4dc5831114a375392e86d6450d4951c06) - https://owasp.org/www-community/vulnerabilities/PHP_Object_Injection 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-2023-47130: yii RCE — Fixed in 1.1.29