What is GHSA-9p8f-ppfj-8gc5?

GHSA-9p8f-ppfj-8gc5 is a security advisory published by GitHub Security Advisories with Medium severity. A cache poisoning vulnerability in CoreBunch/Instatic through 0.0.14 allows an unauthenticated...

Which CVE IDs does GHSA-9p8f-ppfj-8gc5 cover?

GHSA-9p8f-ppfj-8gc5 covers the following CVE IDs: CVE-2026-72587. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9p8f-ppfj-8gc5?

GHSA-9p8f-ppfj-8gc5 has a CVSS v3 base score of 6.1, published by GitHub Security Advisories.

GHSA-9p8f-ppfj-8gc5MediumCVSS 6.1

A cache poisoning vulnerability in CoreBunch/Instatic through 0.0.14 allows an unauthenticated...

Vendor

GitHub Security Advisories

Published

August 10, 2026

Last Modified

August 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-72587 →

📋 Description

A cache poisoning vulnerability in CoreBunch/Instatic through 0.0.14 allows an unauthenticated remote attacker to poison the shared process-wide render cache by manipulating the u query parameter of the GET /_instatic/hole/ server island endpoint.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-72587
https://github.com/CoreBunch/Instatic
https://github.com/advisories/GHSA-9p8f-ppfj-8gc5