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Back to active CVEs
Critical · CVSS 9.9CVE-2026-110720

Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rulesCVE-2026-110720

Answer in brief

CVE-2026-110720 records a Critical severity (CVSS 9.9) vulnerability in Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules. The current sources do not mark it as known exploited. The current feed maps HashiCorp/Tooling (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 Oct 26, 2026Updated Oct 26, 2026Source checked Oct 26, 2026First seen by HOL Oct 26, 2026Material review Oct 26, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.9. 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 HashiCorp/Tooling (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
HashiCorp/Toolinggeneric>=0.42.0 <2.0.42.0.4

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for HashiCorp/Tooling.
  2. 2Review the reported fix. Update HashiCorp/Tooling to 2.0.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 26, 2026

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

  2. Source modified

    Oct 26, 2026

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

  3. First seen by HOL

    Oct 26, 2026

Sources and claim methodology

  • Source referencediscuss.hashicorp.com
Upstream source description

Consul-k8s versions 0.42.0 and later are vulnerable to a cross-namespace authorization bypass in component ACL binding rules that may allow an attacker to obtain elevated Consul privileges. This vulnerability (CVE-2026-110720) is fixed in consul-k8s 2.1.0 and 1.8.18.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Mem0: Cross-tenant conversation leak via unescaped delimiter collision in session-scope key (_build_session_scope)Also CWE-863

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-863
Source
CVE List V5
Source checked
Oct 26, 2026
References
1 linked source
Open source record