Bypass deserialization checks in Apache Dubbo
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
The Dubbo Provider will check the incoming request and the corresponding serialization type of this request meet the configuration set by the server. But there's an exception that the attacker can use to skip the security check (when enabled) and reaching a deserialization operation with native java serialization. Apache Dubbo 2.7.13, 3.0.2 fixed this issue by quickly fail when any unrecognized request was found.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Dubbo | Apache Dubbo 2.7.x – 2.7.12; Apache Dubbo 3.0.x – 3.0.1 | — | No fix listed | CNA |
| — | org.apache.dubbo:dubbo (Maven) | before 2.7.13 | 2.7.13 | Patch available | GHSA-q897-9jxf-jg9r |
| — | org.apache.dubbo:dubbo (Maven) | 3.0.0 to before 3.0.2 | 3.0.2 | Patch available | GHSA-q897-9jxf-jg9r |
- Apache Dubbo VendorApache Affected Apache Dubbo 2.7.x – 2.7.12; Apache Dubbo 3.0.x – 3.0.1 Fixed in — No fix listed CNA
- org.apache.dubbo:dubbo (Maven) Vendor— Affected before 2.7.13 Fixed in 2.7.13 Patch available GHSA-q897-9jxf-jg9r
- org.apache.dubbo:dubbo (Maven) Vendor— Affected 3.0.0 to before 3.0.2 Fixed in 3.0.2 Patch available GHSA-q897-9jxf-jg9r
Remediation
- Fix · GHSA-q897-9jxf-jg9r org.apache.dubbo:dubbo (Maven) Fixed in 2.7.13 Advisory →
- Fix · GHSA-q897-9jxf-jg9r org.apache.dubbo:dubbo (Maven) Fixed in 3.0.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-37579
- 2026-10-03 Alias added: GHSA-q897-9jxf-jg9r
References
More Apache Dubbo vulnerabilities
- TI-2021-12489 Regular expression Denial of Service in MooTools CVSS 3.1CRITICAL 9.8
- TI-2021-10721 Apache Dubbo RCE on customers via Script route poisoning (Nashorn script injection) CVSS 3.1CRITICAL 9.8
- TI-2021-10720 Apache Dubbo RCE on customers via Condition route poisoning (Unsafe YAML unmarshaling) CVSS 3.1CRITICAL 9.8
- TI-2019-13107 Deserialization of untrusted data in Apache Dubbo CVSS 3.1CRITICAL 9.8
- TI-2021-07774 Dubbo Zookeeper does not check serialization id CVSS 3.1CRITICAL 9.8
- TI-2021-19290 Dubbo Hessian cause RCE when parse error CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-37579 · CVE Program
- CVE-2021-37579 · NVD
- FIRST EPSS
- GHSA-q897-9jxf-jg9r · GitHub Advisory Database · CC BY 4.0
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