What is GHSA-c296-3x4p-h9hf?

GHSA-c296-3x4p-h9hf is a security advisory published by GitHub Security Advisories with Medium severity. Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker...

Which CVE IDs does GHSA-c296-3x4p-h9hf cover?

GHSA-c296-3x4p-h9hf covers the following CVE IDs: CVE-2026-121138. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-c296-3x4p-h9hf?

GHSA-c296-3x4p-h9hf has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-c296-3x4p-h9hfMediumCVSS 6.5

Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-121138 →

📋 Description

Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Low)

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-121138
https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/553249728
https://github.com/advisories/GHSA-c296-3x4p-h9hf