CVE-2026-115693 Benoitc hackney - Improper Certificate Validation

Benoitc hackney 1.24.0 before 4.9.0 contains an improper certificate validation caused by incorrect handling of trust anchors in hackney_ssl, letting on-path attackers impersonate servers pinned to private CAs using publicly trusted roots, exploit requires attacker to have a publicly trusted certificate for the pinned hostname.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
View the NVD record ↗

Details

Type
Improper Certificate Validation
Impact
Man In The Middle
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
26 October 2026
Updated
27 October 2026
Weakness
CWE-295

Vendor fix

Update to version 4.9.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs