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HIGH

CVE-2026-103398

CVSS v3

8.1

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-10-01

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

OpenSave through 2.4.0 fails to properly validate save paths supplied by paired peers in the manifest request handler. Attackers can specify arbitrary directories outside configured save locations to read and write files through manifest and sync routes.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2026-09-30
Last Modified
2026-09-30

Frequently asked questions

What is CVE-2026-103398?

OpenSave through 2.4.0 fails to properly validate save paths supplied by paired peers in the manifest request handler. Attackers can specify arbitrary directories outside configured save locations to read and write files through manifest and sync routes.

Is CVE-2026-103398 actively exploited?

Active exploitation of CVE-2026-103398 has not been confirmed. Its EPSS score was 0.5% on 2026-10-01, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-103398?

CVE-2026-103398 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Is CVE-2026-103398 affecting your environment?

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