CVE-2026-127091: Jadaptive Maverick Synergy Server · Improper Resolution of Path Equivalence
Affects Jadaptive Maverick Synergy ServerSource CVE Database V5
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, 10:02 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
Fixed versions 3.0.33 and 3.1.7 of Maverick Synergy Server and 1.8.1 of Maverick Legacy Server are available and should be applied to remediate this vulnerability. Users should upgrade to these versions to ensure proper path equivalence resolution and enforcement of mount-level access policies.
Description
CVE-2026-127091 is a vulnerability in Jadaptive Maverick Synergy Server and Maverick Legacy Server that allows authenticated users to bypass mount-level access controls by exploiting improper path equivalence resolution. This flaw exists in versions before 3.0.33 and 3.1.7 of Maverick Synergy Server, and before 1.8.1 of Maverick Legacy Server. Attackers can use specially crafted paths containing duplicate separators or dot segments to access files or directories that should be restricted by parent mount policies.
References
- jadaptive.com/security/advisories/JADAPTIVE-SA-2026-002 (opens in a new tab)
- github.com/sshtools/maverick-synergy/commit/f5531c21302d00901021bf2cb4dba7fca6436cfb (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)
- 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)
- 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)