CVE-2026-103398
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb (third-party-advisory)
- github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/p2p/routes.go (technical-description)
- github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/delta/rootguard.go (technical-description)
- github.com/Liquid-co/OpenSave (product)
- www.vulncheck.com/advisories/opensave-through-2.4.0-arbitrary-file-read-and-wri… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-103398?
- CVE-2026-103398 is a high-severity vulnerability, classified under External Control of File Name or Path. CVSS score: 8.1/10. Published 2026-09-30.
- How severe is CVE-2026-103398?
- High severity. CVSS v3 base score is 8.1 out of 10.