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Vulnerabilities CVE-2026-48863

CVE-2026-48863

High
Open
TLP:CLEAR

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

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Description

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.

Details

CVSS Score
7.5
EPSS Score
0.47%

38.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
Jul 16, 2026
Last Modified
Aug 21, 2026
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