CVE-2026-48863

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-48863
https://bugzilla.redhat.com/show_bug.cgi?id=2460975
https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592
https://access.redhat.com/security/cve/CVE-2026-48863
https://bugzilla.redhat.com/show_bug.cgi?id=2460975
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-16 01:16

Updated : 2026-08-31 15:17

NVD link : CVE-2026-48863

Mitre link : CVE-2026-48863

CVE.ORG link : CVE-2026-48863

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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