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CVE-2026-127091VulnerabilityPublished

Jadaptive Maverick Synergy Server before 3.0.33 and 3.1.x before 3.1.7, and Maverick Legacy Server before 1.8.1

Source GCVE Database

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Authoritative record:CVE-2026-127091· High 7.6

Not known to be exploited · CVSS 7.6 High : upgrade to 3.1.7 or 3.0.33 soon.

Data as of 13 Nov 2026, 13:48 UTC

CVSS 4.0 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.07.6
CNA (VulnCheck)CVSS 3.16.8
Patch
Available – fixed in 3.1.7, 3.0.33, 1.8.1
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 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 13 Nov 2026.

What to do

Upgrade Maverick to 3.1.7 or 3.0.33 (Synergy Server); 1.8.1 (Legacy Server).

Affected software

ProductAffectedFixed in
JadaptiveMaverick Synergy ServerAffected
  • >=3.1.0 <3.1.7
Fixed in
  • 3.1.7
JadaptiveMaverick Synergy ServerAffected
  • <3.0.33
Fixed in
  • 3.0.33
JadaptiveMaverick Legacy ServerAffected
  • <1.8.1
Fixed in
  • 1.8.1
MavenMaverick Synergy Serverpkg:maven/Maverick Synergy ServerOther threatsAffected
  • <3.0.33
  • >=3.1.0 <3.1.7
Fixed in
  • 3.0.33
  • 3.1.7

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, restrict authenticated user access and monitor for suspicious file access patterns related to path manipulation. Avoid exposing the vulnerable server to untrusted networks where possible.

Description

Jadaptive Maverick Synergy Server versions before 3.0.33 and 3.1.x before 3.1.7, along with Maverick Legacy Server before 1.8.1, have an improper path equivalence vulnerability. This flaw in the VirtualFileFactory.canonicalisePath function allows authenticated users to bypass mount-level access controls by using specially crafted paths with duplicate separators or dot segments. This can enable unauthorized read or write access to files that should be restricted by the child mount's policy.

References

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