Vulnerability · Published Sep 30, 2026 · Assigned by VulnCheck
CVE-2026-103398OpenSave through 2.4.0 Arbitrary File Read and Write via Peer-Controlled Save Path
High 8.1
In plain English
A high-severity security flaw in OpenSave from Liquid-co. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.3%top 81.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb third-party-advisory
- https://github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/p2p/routes.go#L555-L566 technical-description
- https://github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/delta/rootguard.go#L16-L30 technical-description
- https://github.com/Liquid-co/OpenSave product
- VulnCheck Advisory: OpenSave through 2.4.0 Arbitrary File Read and Write via Peer-Controlled Save Path third-party-advisory