CVE-2026-42784 - CERT CVE
ID CVE-2026-42784
Sažetak A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.
Reference
CVSS
Base: 7.4
Impact: 4.0
Exploitability:2.8
Pristup
VektorSloženostAutentikacija
NETWORK LOW NONE
Impact
PovjerljivostCjelovitostDostupnost
NONE HIGH NONE
CVSS vektor CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Zadnje važnije ažuriranje 18-09-2026 - 18:17
Objavljeno 16-09-2026 - 17:17