How severe is GHSA-8grv-jq2g-cfhw?

GHSA-8grv-jq2g-cfhw has a CVSS score of 5.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-8grv-jq2g-cfhw?

GHSA-8grv-jq2g-cfhw affects the following packages: amphp/http-server (Packagist), amphp/http-server (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-8grv-jq2g-cfhw?

Update amphp/http-server to 3.4.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8grv-jq2g-cfhw is resolved across your whole dependency graph.

How do I detect GHSA-8grv-jq2g-cfhw in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for amphp/http-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-8grv-jq2g-cfhw if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is GHSA-8grv-jq2g-cfhw actively exploited in the wild?

No public exploit code has been indexed for GHSA-8grv-jq2g-cfhw yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-8grv-jq2g-cfhw published, and has it been updated?

GHSA-8grv-jq2g-cfhw was published on February 10, 2026 and was last updated on February 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

amphp/http-server affected by HTTP/2 DDoS vulnerabilityGHSA-8grv-jq2g-cfhw

MEDIUM

GHSA-8grv-jq2g-cfhw is a medium-severity (CVSS 5.3) vulnerability in amphp/http-server. A fix is available for amphp/http-server — see the affected versions and patch details below.

Published

Feb 10, 2026

Updated

Feb 10, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Feb 10, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected

🐘amphp/http-server🐘amphp/http-server

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Versions of amphp/http-server prior to 3.4.4 for the 3.x release branch and prior to 2.1.10 for the 2.x release branch are vulnerable to the HTTP/2 "MadeYouReset" DoS attack described by CVE-2025-8671 and https://kb.cert.org/vuls/id/767506.

In versions 3.4.4 and 2.1.10, stream reset protection has been refactored to account for the number of reset streams within a sliding time window.

Note that your application must expose HTTP/2 connections directly to be affected by this vulnerability. Servers behind a proxy using HTTP/1.x such as nginx are not affected.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`amphp/http-server`	≥ 3.0.0-beta.1&&< 3.4.4	3.4.4`composer require amphp/http-server:^3.4.4`
🐘Packagist	`amphp/http-server`	≥ 2.0.0-rc1&&< 2.1.10	2.1.10`composer require amphp/http-server:^2.1.10`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for amphp/http-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update amphp/http-server to 3.4.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8grv-jq2g-cfhw is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

Versions of `amphp/http-server` prior to `3.4.4` for the 3.x release branch and prior to `2.1.10` for the 2.x release branch are vulnerable to the HTTP/2 "MadeYouReset" DoS attack described by CVE-2025-8671 and https://kb.cert.org/vuls/id/767506. In versions `3.4.4` and `2.1.10`, stream reset protection has been refactored to account for the number of reset streams within a sliding time window. Note that your application must expose HTTP/2 connections directly to be affected by this vulnerability. Servers behind a proxy using HTTP/1.x such as nginx are not affected.

O3 Security · Impact-Aware SCA

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