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
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
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 7.6 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 6.8 |
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 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 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
| Product | Affected | Fixed in |
|---|---|---|
| JadaptiveMaverick Synergy Server | Affected
| Fixed in
|
| JadaptiveMaverick Synergy Server | Affected
| Fixed in
|
| JadaptiveMaverick Legacy Server | Affected
| Fixed in
|
MavenMaverick Synergy Serverpkg:maven/Maverick Synergy ServerOther threats | Affected
| Fixed in
|
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
- nvd.nist.gov/vuln/detail/CVE-2026-127091 (opens in a new tab)
- github.com/sshtools/maverick-synergy/commit/f5531c21302d00901021bf2cb4dba7fca6436cfb (opens in a new tab)
- github.com/sshtools/maverick-synergy/blob/3.1.4/maverick-virtual-filesystem/src/main/java/com/sshtools/common/files/vfs/VirtualFileFactory.java (opens in a new tab)
- jadaptive.com/security/advisories/JADAPTIVE-SA-2026-002 (opens in a new tab)
- store.jadaptive.com/app/api/releases/changes/01d04a39-0f05-4bae-842e-d2f1acc16985 (opens in a new tab)
- store.jadaptive.com/app/api/releases/changes/ff71bdcf-a2a2-47e0-af5a-22e15af1dfa4 (opens in a new tab)
- vulncheck.com/advisories/jadaptive-maverick-synergy-server-before-3.0.33-and-3.1-x-before-3.1.7-and-maverick-legacy-server-before-1.8.1-vfs-mount-policy-bypass-via-non-canonical-paths (opens in a new tab)