Spring Framework <=6.2.6 – Bind Bypass via disallowedFields
CVE-2025-22233 Published on May 16, 2025
Spring Framework DataBinder Case Sensitive Match Exception
CVE-2024-38820 ensured Locale-independent, lowercase conversion for both the configured disallowedFields patterns and for request parameter names. However, there are still cases where it is possible to bypass the disallowedFields checks.
Affected Spring Products and Versions
Spring Framework:
* 6.2.0 - 6.2.6
* 6.1.0 - 6.1.19
* 6.0.0 - 6.0.27
* 5.3.0 - 5.3.42
* Older, unsupported versions are also affected
Mitigation
Users of affected versions should upgrade to the corresponding fixed version.
Affected version(s)Fix Version Availability 6.2.x
6.2.7
OSS6.1.x
6.1.20
OSS6.0.x
6.0.28
Commercial https://enterprise.spring.io/ 5.3.x
5.3.43
Commercial https://enterprise.spring.io/
No further mitigation steps are necessary.
Generally, we recommend using a dedicated model object with properties only for data binding, or using constructor binding since constructor arguments explicitly declare what to bind together with turning off setter binding through the declarativeBinding flag. See the Model Design section in the reference documentation.
For setting binding, prefer the use of allowedFields (an explicit list) over disallowedFields.
Credit
This issue was responsibly reported by the TERASOLUNA Framework Development Team from NTT DATA Group Corporation.
Vulnerability Analysis
CVE-2025-22233 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2025-22233
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Affected Versions
Spring Framework:- Version 6.2.0, <= 6.2.6 is affected.
- Version 6.1.0, <= 6.1.19 is affected.
- Version 6.0.0, <= 6.0.27 is affected.
- Version 5.3.0, <= 5.3.42 is affected.
- Version 6.2.7 is unaffected.
- Version 6.1.20 is unaffected.
- Version 6.0.28 is unaffected.
- Version 5.3.43 is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.