AZL-109956

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Import Source

https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109956.json

JSON Data

https://api.osv.dev/v1/vulns/AZL-109956

Upstream

CVE-2026-86409

Published

2026-10-20T20:17:25Z

Modified

2026-10-30T05:35:37Z

Summary

CVE-2026-86409 affecting package curl 8.11.1-11

Details

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

https://nvd.nist.gov/vuln/detail/CVE-2026-86409

Affected packages

Azure Linux:3 / curl

Package

Name: curl
Purl: pkg:rpm/azure-linux/curl

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

8.11.1-11

Database specific

source

"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109956.json"