CVE-2026-9079

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

Score

CVSS 3.1 9.8 Critical

Status

Modified - 2499f714-1537-4658-8207-48ae4bb9eae9

Published

2026-07-03

Last modified

2026-09-15

Weaknesses

CWE-522

Affected products

• Curl (Curl)
• Curl (Haxx)

References

• https://curl.se/docs/CVE-2026-9079.html
• https://curl.se/docs/CVE-2026-9079.json
• https://hackerone.com/reports/3750295