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Consul vulnerable to an authorization bypass in the Connect service mesh

🗓️ 10 Sep 2026 18:49:49Reported by HashiCorp Security TeamType 
hashicorp
 hashicorp
🔗 discuss.hashicorp.com👁 24 Views

Authorization bypass in Consul Connect service mesh due to unescaped characters in Envoy RBAC rules.

Related
Detection
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins
Security Bulletin: Consul vulnerable to an authorization bypass in the Connect service mesh
10 Sep 202620:10
–ibm
cve
CVE
CVE-2026-88021
10 Sep 202618:58
–cve
cvelist
Cvelist
CVE-2026-88021 Consul vulnerable to an authorization bypass in the Connect service mesh
10 Sep 202618:58
–cvelist
euvd
EUVD
EUVD-2026-75700
10 Sep 202618:58
–euvd
mend
Mend
CVE-2026-88021
10 Sep 202618:58
–mend
nvd
NVD
CVE-2026-88021
10 Sep 202619:17
–nvd
osv_bit
osv_bit
BIT-CONSUL-2026-88021 Consul vulnerable to an authorization bypass in the Connect service mesh
25 Sep 202612:20
–osv_bit
osv_cga
osv_cga
CGA-FC5F-WFMV-8QC2
25 Sep 202614:50
–osv_cga
osv_cga
osv_cga
CGA-R7XQ-6QVM-C876
25 Sep 202612:24
–osv_cga
osv_cga
osv_cga
CGA-R9WF-R922-V996
25 Sep 202613:28
–osv_cga
Rows per page
Vulners
Node
OR
hashicorpconsulRange≤1.9.0
hashicorpconsulRange<2.0.4
hashicorpconsulRange≤1.9.0enterprise
hashicorpconsulRange<2.0.4enterprise

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10 Sep 2026 18:49Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.1
EPSS0.00335
SSVC
24