What is GHSA-57hx-469r-xq3r?

GHSA-57hx-469r-xq3r is a security advisory published by GitHub Security Advisories with High severity. Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to...

Which CVE IDs does GHSA-57hx-469r-xq3r cover?

GHSA-57hx-469r-xq3r covers the following CVE IDs: CVE-2026-86409. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-57hx-469r-xq3r?

GHSA-57hx-469r-xq3r has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-57hx-469r-xq3rHighCVSS 8.1

Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to...

Vendor

GitHub Security Advisories

Published

October 20, 2026

Last Modified

October 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-86409 →

📋 Description

Setting CURLOPT_AWS_SIGV4 to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same handle still sends an Authorization: AWS4-HMAC-SHA256 header to whatever URL isset next, leaking state information.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-86409
https://hackerone.com/reports/3973135
https://curl.se/docs/CVE-2026-86409.html
https://curl.se/docs/CVE-2026-86409.json
https://github.com/advisories/GHSA-57hx-469r-xq3r