CVE-2026-6253

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

מדדים

CVSS 3.1

5.9 (MEDIUM) מקור הציון: CNA CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

1% (אחוזון 100) נכון ל-30/9/2026

CWE

CWE-522

מוצרים מושפעים

haxx: curl

קישורים

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