AZL-86666

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86666.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-86666
Upstream
Published
2026-05-13T13:01:56Z
Modified
2026-09-09T05:29:25Z
Summary
CVE-2026-6253 affecting package curl for versions less than 8.11.1-9
Details

curl might erroneously pass on credentials for a first proxy to a second proxy.

This can happen when the following conditions are true:

  1. curl is setup to use specific different proxies for different URL schemes
  2. the first proxy needs credentials
  3. the second proxy uses no credentials
  4. while using the first proxy (using say http://), curl is asked to follow a redirect to a URL using another scheme (say https://), accessed using a second, different, proxy
References

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
Fixed
8.11.1-9

Database specific

source 
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86666.json"