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VulnerabilityPublished

CVE-2026-6903: Zurich Instruments LabOne · Path Traversal

Affects Zurich Instruments LabOneSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 26.01.3.9 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 26.01.3.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Apr 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 30 Oct 2026.

What to do

Upgrade Zurich Instruments LabOne to 26.01.3.9.

Affected software

ProductAffectedFixed in
Zurich InstrumentsLabOneAffected
  • <26.01.3.9
Fixed in
  • 26.01.3.9

AI-suggested

If you cannot patch yet, users should disable the LabOne Web Server component if not required, as installations using only LabOne APIs without the Web Server are not vulnerable. Additionally, restrict network access to the LabOne Web Server to trusted users and networks to reduce exposure.

Description

The LabOne Web Server, backing the LabOne User Interface, contains insufficient input validation in its file access functionality. An unauthenticated attacker could exploit this vulnerability to read arbitrary files on the host system that are accessible to the operating system user running the LabOne software. Additionally, the Web Server does not sufficiently restrict cross-origin requests, which could allow a remote attacker to trigger file access from a victim's browser by directing the victim to a malicious website. The vulnerability is only exploitable when the LabOne Web Server is running. Installations using only the LabOne APIs without starting the Web Server are not exposed.

References

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