CVE-2026-103398CWE-73

CVE-2026-103398

High · published September 30, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
17.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00267 · 17.8th percentile
Weakness
CWE-73 · External Control of File Name or Path
Published
2026-09-30T19:22Z
References (5)
https://gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb · [email protected]https://github.com/Liquid-co/OpenSave · [email protected]https://github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/delta/rootguard.go#L16-L30 · [email protected]https://github.com/Liquid-co/OpenSave/blob/v2.4.0/internal/p2p/routes.go#L555-L566 · [email protected]https://www.vulncheck.com/advisories/opensave-through-2.4.0-arbitrary-file-read-and-write-via-peer-controlled-save-path · [email protected]
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 30 SEP 14:48Z
    OpenSave through 2.4.0 Arbitrary File Read and Write via Peer-Controlled Save Path
    cvelistv5