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VulnerabilityPublished Updated

CVE-2026-103397: Liquid-co OpenSave · Authentication Bypass by Spoofing

Affects Liquid-co OpenSaveSource CVE Database V5

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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

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Liquid-coOpenSaveAffected
  • <2.4.0-beta.1
Fixed in
  • 2.4.0-beta.1
GitHubOpenSavepkg:github/OpenSaveOther threatsAffected
  • <2.4.0-beta.1
Fixed in
  • 2.4.0-beta.1

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

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