CVE-2026-48863 HIGH

CVE-2026-48863: Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service

Vendor Opensuse
Product libsolv
Weakness CWE-121
Published July 16, 2026
Last update July 18, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.

Key dates

02Disclosure timeline

July 16, 2026 CVE published
July 18, 2026 Record updated