HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node…
Priority LOW 33CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-862.
Summary
HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2."
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01069 65th percentileScored 2026-11-07
Fix Partial github.com/hashicorp/consul (Go): 1.11.9, 1.12.5, 1.13.2Red Hat: 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/hashicorp/consul (Go) | 1.8.1 to before 1.11.9 | 1.11.9 | Patch available | GHSA-hr3v-8cp3-68rf |
| — | github.com/hashicorp/consul (Go) | 1.12.0 to before 1.12.5 | 1.12.5 | Patch available | GHSA-hr3v-8cp3-68rf |
| — | github.com/hashicorp/consul (Go) | 1.13.0 to before 1.13.2 | 1.13.2 | Patch available | GHSA-hr3v-8cp3-68rf |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/hashicorp/consul (Go) Vendor— Affected 1.8.1 to before 1.11.9 Fixed in 1.11.9 Patch available GHSA-hr3v-8cp3-68rf
- github.com/hashicorp/consul (Go) Vendor— Affected 1.12.0 to before 1.12.5 Fixed in 1.12.5 Patch available GHSA-hr3v-8cp3-68rf
- github.com/hashicorp/consul (Go) Vendor— Affected 1.13.0 to before 1.13.2 Fixed in 1.13.2 Patch available GHSA-hr3v-8cp3-68rf
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:* | 1.8.1 to before 1.11.9 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:* | 1.8.1 to before 1.11.9 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:-:*:*:* | 1.12.4 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:enterprise:*:*:* | 1.12.4 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:-:*:*:* | 1.13.1 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:enterprise:*:*:* | 1.13.1 | Vulnerable | HashiCorp |
- cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:* Versions 1.8.1 to before 1.11.9 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:* Versions 1.8.1 to before 1.11.9 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:-:*:*:* Versions 1.12.4 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:enterprise:*:*:* Versions 1.12.4 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:-:*:*:* Versions 1.13.1 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:enterprise:*:*:* Versions 1.13.1 Vulnerable ·HashiCorp
Remediation
- Fix · GHSA-hr3v-8cp3-68rf github.com/hashicorp/consul (Go) Fixed in 1.11.9 Advisory →
- Fix · GHSA-hr3v-8cp3-68rf github.com/hashicorp/consul (Go) Fixed in 1.12.5 Advisory →
- Fix · GHSA-hr3v-8cp3-68rf github.com/hashicorp/consul (Go) Fixed in 1.13.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet |
Not affected: 2 products
- Logging Subsystem for Red Hat OpenShift
- Red Hat Advanced Cluster Management for Kubernetes 2
Timeline
- 2026-10-02 Threatist record created from CVE-2021-41803
- 2026-10-03 Alias added: GHSA-hr3v-8cp3-68rf
References
Advisory 6
Other 5
- https://github.com/hashicorp/consul/pull/14577/commits/2c881259ce10e308ff03afc968c4165998fd7fee
- https://github.com/hashicorp/consul
- https://lists.fedoraproject.org/archives/list/[email protected]/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC
- https://lists.fedoraproject.org/archives/list/[email protected]/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI
More HashiCorp Consul vulnerabilities
- TI-2021-18437 HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4… CVSS 3.1HIGH 8.8
- TI-2022-11698 HashiCorp Consul and Consul Enterprise up to 1.9.16, 1.10.9, and 1.11.4 may allow server… CVSS 3.1HIGH 7.5
- TI-2021-02215 An issue was discovered in GoGo Protobuf before 1.3.2. CVSS 3.1HIGH 8.6
- TI-2024-09286 Consul L7 Intentions Vulnerable To Headers Bypass CVSS 3.1HIGH 8.3
- TI-2023-02638 Consul Envoy Extension Downsteam Proxy Configuration By Upstream Service Owner CVSS 3.1HIGH 8.7
- TI-2022-03595 Consul Peering Imported Nodes/Services Leak CVSS 3.1HIGH 7.5
Sources
- CVE-2021-41803 · CVE Program
- CVE-2021-41803 · NVD
- FIRST EPSS
- GHSA-hr3v-8cp3-68rf · GitHub Advisory Database · CC BY 4.0
- CVE-2021-41803 · Red Hat security data · CC BY 4.0
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