CVE-2026-9079
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| curl | curl | 8.20.0 <= 8.20.0 | affected |
| curl | curl | 8.19.0 <= 8.19.0 | affected |
| curl | curl | 8.18.0 <= 8.18.0 | affected |
| curl | curl | 8.17.0 <= 8.17.0 | affected |
| curl | curl | 8.16.0 <= 8.16.0 | affected |
| curl | curl | 8.15.0 <= 8.15.0 | affected |
| curl | curl | 8.14.1 <= 8.14.1 | affected |
| curl | curl | 8.14.0 <= 8.14.0 | affected |
| curl | curl | 8.13.0 <= 8.13.0 | affected |
| curl | curl | 8.12.1 <= 8.12.1 | affected |
| curl | curl | 8.12.0 <= 8.12.0 | affected |
| curl | curl | 8.11.1 <= 8.11.1 | affected |
| curl | curl | 8.11.0 <= 8.11.0 | affected |
| curl | curl | 8.10.1 <= 8.10.1 | affected |
| curl | curl | 8.10.0 <= 8.10.0 | affected |
| curl | curl | 8.9.1 <= 8.9.1 | affected |
| curl | curl | 8.9.0 <= 8.9.0 | affected |
| curl | curl | 8.8.0 <= 8.8.0 | affected |
Weaknesses
- CWE-522 Insufficiently Protected Credentials
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: total
Additional References
References
- https://curl.se/docs/CVE-2026-9079.json
- https://curl.se/docs/CVE-2026-9079.html
- https://hackerone.com/reports/3750295
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