---
id: "CVE-2026-119723"
page: "https://infrastack.ai/live/CVE-2026-119723"
kind: "vulnerability"
aliases: ["CVE-2026-119723"]
title: "HHVM: crafted GET or POST request crashes the server process"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: [{"name": "HHVM", "fixed": [], "affected": "", "ecosystem": "runtime"}]
ecosystems: ["runtime"]
tags: ["hhvm", "php", "runtime", "web-server"]
not_affected_if: ["not-running-hhvm", "patched-build"]
published_at: "2026-11-11T17:17:17+00:00"
first_seen_at: "2026-11-11T17:28:21+00:00"
updated_at: "2026-11-11T17:29:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119723", "first_seen_at": "2026-11-11T17:28:21+00:00"}]
exploit_sources: []
---

# HHVM: crafted GET or POST request crashes the server process

Link for people: https://infrastack.ai/live/CVE-2026-119723 (this .md is for agents)

HHVM did not check whether appending a nested array succeeded while parsing query-string and form parameters. A remote, unauthenticated attacker can send one GET or POST request that crashes the HHVM server process before any application code runs.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- runtime:HHVM affected range not listed fixed no fixed version listed

## How to check

- Confirm whether the HHVM build in use predates commit `23c061f4e804a51badd5f85227e65185651253b5`
- Check which HHVM version is deployed on servers that accept HTTP traffic

## Fix

- HHVM: move to a build that includes commit `23c061f4e804a51badd5f85227e65185651253b5`

## Timeline

- 2026-11-11T17:28:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119723

## Documents

- [fix] Patch: github.com https://github.com/meta/hhvm/commit/23c061f4e804a51badd5f85227e65185651253b5

## From the sources

When parsing request variables such as query-string and form parameters, HHVM did not check that appending a nested array succeeded before descending into it. A remote, unauthenticated attacker could send a GET or POST request which would crash the HHVM server process before any application code runs, leading to denial of service. This issue affected HHVM prior to 23c061f4e804a51badd5f85227e65185651253b5.

---

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