CVE-2026-103397: Liquid-co OpenSave · Authentication Bypass by Spoofing
Affects Liquid-co OpenSaveSource CVE Database V5
Not known to be exploited · CVSS 6.3 Medium : upgrade to 2.4.0-beta.1 when convenient.
Data as of 14 Nov 2026, 20:43 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.4.0-beta.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade Liquid-co OpenSave to 2.4.0-beta.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Liquid-coOpenSave | Affected
| Fixed in
|
GitHubOpenSavepkg:github/OpenSaveOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
CVE-2026-103397 is an authentication bypass vulnerability in Liquid-co OpenSave versions before 2.4.0-beta.1. The flaw allows attackers who know the room code to spoof the RelayMessage From field in WAN relay requests, impersonating paired devices. This enables unauthorized access to protected synchronization routes, including save data, snapshots, and file operations.
References
- gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb (opens in a new tab)
- github.com/Liquid-co/OpenSave/commit/2f2612b13233ac123e01a03cb3008c44bacaeae3 (opens in a new tab)
- github.com/Liquid-co/OpenSave/blob/v2.3.1/internal/p2p/wanclient_handlers.go (opens in a new tab)
- github.com/Liquid-co/OpenSave (opens in a new tab)
- vulncheck.com/advisories/opensave-before-2.4.0-beta.1-authentication-bypass-via-spoofed-relay-sender (opens in a new tab)