CVE-2026-6253

01/תיאור (מקור, אנגלית)

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

02/מוצרים מושפעים

haxx: curl

03/קישורים5

• curl.se/docs/CVE-2026-6253.html PatchVendor Advisory
• curl.se/docs/CVE-2026-6253.json Vendor Advisory
• www.openwall.com/lists/oss-security/2026/04/29/11 Mailing ListPatchThird Party Advisory
• hackerone.com/reports/3669637 ExploitIssue TrackingThird Party Advisory
• hackerone.com/reports/3669637 ExploitIssue TrackingThird Party Advisory