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ALPINE-CVE-2026-6253
No affected components available
curl might erroneously pass on credentials for a first proxy to a second proxy.
This can happen when the following conditions are true:
- curl is setup to use specific different proxies for different URL schemes
- the first proxy needs credentials
- the second proxy uses no credentials
- while using the first proxy (using say
http://), curl is asked to follow a redirect to a URL using another scheme (sayhttps://), accessed using a second, different, proxy
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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