CVE-2026-9079

critical · 9.8

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.

9.8

CVSS

0.6%

EPSS (exploit prob.)

47th

EPSS percentile

2026-07-03

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-522

Affected products

Vendor	Product	Affected versions
haxx	curl	>= 8.8.0, < 8.21.0

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-9079