yiisoft Yii2 MockClass.php generate deserialization
Priority MEDIUM 57CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
A vulnerability, which was classified as critical, was found in yiisoft Yii2 up to 2.0.39. This affects the function Generate of the file phpunit\src\Framework\MockObject\MockClass.php. The manipulation leads to deserialization. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00677 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Yiiframework | Yii2 | 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 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; 2.0.30; 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 | — | No fix listed | CNA |
- Yii2 VendorYiiframework Affected 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 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; 2.0.30; 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 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yiiframework:yii:*:*:*:*:*:*:*:* | 2.0.0 – 2.0.39 | Vulnerable | Yiiframework |
- cpe:2.3:a:yiiframework:yii:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.0.39 Vulnerable ·Yiiframework
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-2690
- 2026-10-03 Alias added: GHSA-97q7-cqc5-x5gj
- 2026-10-06 EPSS moved to the 50th–90th percentile
References
More Yiiframework Yii vulnerabilities
- TI-2024-38344 Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-11920 Unsafe deserialization in Yii 2 CVSS 3.1CRITICAL 10.0
- TI-2024-04634 Unsafe Reflection in base Component class in yiisoft/yii2 CVSS 3.1CRITICAL 9.1
- TI-2025-02354 yiisoft Yii2 SortableIterator.php getIterator deserialization CVSS 4.0MEDIUM 5.3
- TI-2023-11755 SQL injection vulnerability found in Yii Framework Yii 2 Framework before v.2.0.47 allows… CVSS 3.1CRITICAL 9.8
- TI-2015-04601 web\ViewAction in Yii (aka Yii2) 2.x before 2.0.5 allows attackers to execute any local… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-2690 · CVE Program
- CVE-2025-2690 · NVD
- FIRST EPSS
- GHSA-97q7-cqc5-x5gj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences