CVE-2026-39850

Yii 2 is a PHP application framework. Versions 2.0.54 and prior contain flawed logic in the core view rendering method View::renderPhpFile() that leads to Local File Inclusion. The function calls extract($params, EXTR_OVERWRITE) before the require statement that loads the view file. As a result, a caller-controlled file key in the $params array overwrites the internal local variable specifying which file to include, potentially enabling RCE if an attacker can write PHP files through a separate primitive, as well as information disclosure. This issue has been fixed in version 2.0.55.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-20",
        "CWE-98"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39850.json"
}

References

Affected packages

Git / github.com/yiisoft/yii2

Affected ranges

Type

GIT

Repo

https://github.com/yiisoft/yii2

Events

Introduced

Fixed

babee66def599432735a1ed39c9cf0bc5163a775

Fixed

109878b491dbffa541032bc99fb5e26d12cd0375

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "2.0.55"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "109878b491dbffa541032bc99fb5e26d12cd0375"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

2.*

2.0.0-alpha

2.0.0-beta

2.0.0-rc

2.0.10

2.0.11

2.0.11.1

2.0.11.2

2.0.12

2.0.13

2.0.13.1

2.0.14

2.0.14.1

2.0.14.2

2.0.16

2.0.16.1

2.0.17

2.0.18

2.0.19

2.0.2

2.0.20

2.0.21

2.0.22

2.0.23

2.0.24

2.0.25

2.0.26

2.0.27

2.0.28

2.0.29

2.0.3

2.0.30

2.0.31

2.0.32

2.0.33

2.0.34

2.0.35

2.0.36

2.0.37

2.0.38

2.0.39

2.0.39.1

2.0.39.2

2.0.39.3

2.0.4

2.0.40

2.0.41

2.0.41.1

2.0.42

2.0.42.1

2.0.43

2.0.44

2.0.45

2.0.46

2.0.47

2.0.48

2.0.48.1

2.0.49

2.0.49.1

2.0.49.2

2.0.50

2.0.51

2.0.52

2.0.53

2.0.54

2.0.6

2.0.7

2.0.8

2.0.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39850.json"