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Back to active CVEs
High · CVSS 7.6CVE-2026-127091

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 PathsCVE-2026-127091

Answer in brief

CVE-2026-127091 records a High severity (CVSS 7.6) vulnerability in 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. The current sources do not mark it as known exploited. The current feed maps Jadaptive/Maverick Legacy Server (generic), Jadaptive/Maverick Synergy Server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 13, 2026Updated Nov 13, 2026Source checked Nov 13, 2026First seen by HOL Nov 13, 2026Material review Nov 13, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.6
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Jadaptive/Maverick Legacy Server (generic), Jadaptive/Maverick Synergy Server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Jadaptive/Maverick Legacy Servergeneric>=0 <1.8.11.8.1
Jadaptive/Maverick Synergy Servergeneric>=0 <3.0.33 || >=3.1.0 <3.1.73.0.33, 3.1.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Jadaptive/Maverick Legacy Server, Jadaptive/Maverick Synergy Server.
  2. 2Review the reported fix. Update Jadaptive/Maverick Legacy Server to 1.8.1; Jadaptive/Maverick Synergy Server to 3.0.33 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 13, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencejadaptive.com
  • Source referencestore.jadaptive.com
  • Source referencestore.jadaptive.com
  • Source referencevulncheck.com
Upstream source description

Jadaptive Maverick Synergy Server before 3.0.33 and 3.1.x before 3.1.7, and Maverick Legacy Server before 1.8.1, contain an improper path equivalence flaw in VirtualFileFactory.canonicalisePath that bypasses mount-level access policy. Authenticated users can supply paths with duplicate separators or dot segments to route operations to a less restrictive parent mount and read or write files the child mount denies.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-41
Source
CVE List V5
Source checked
Nov 13, 2026
References
6 linked sources
Open source record