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CVE-2026-87993— Consul-template vulnerable to an information disclosure issue in error handling

Quick assessment

Affected
HashiCorp Tooling
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

consul-template 库的错误处理路径中存在一个信息泄露漏洞，可能导致 Vault 密钥的值出现在模板错误消息、日志输出以及下游表面（如 Nomad 任务事件）中。该漏洞（CVE-2026-87993）已在 consul-template 0.43.0 版本中修复。

CVSS 7.7 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
HashiCorp Tooling 0.27.2< 0.43.0 affected
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I. Basic Information for CVE-2026-87993

Vulnerability Information
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Vulnerability Title
Consul-template vulnerable to an information disclosure issue in error handling
Source: CVE Program / CVE List V5
Vulnerability Description
The consul-template library is vulnerable to an information disclosure issue in its error handling path that may allow Vault secret values to appear in template error messages, log output, and downstream surfaces such as Nomad task events. This vulnerability (CVE-2026-87993) is fixed in consul-template 0.43.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HashiCorp Tooling 0.27.2 ~ 0.43.0 -

II. Public POCs for CVE-2026-87993

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III. Intelligence Information for CVE-2026-87993

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Vendor Advisories for CVE-2026-87993 (1)

Same Patch Batch · HashiCorp · 2026-09-10 · 5 CVEs total

CVE-2026-87090 8.3 HIGH Consul vulnerable to an authorization bypass in the catalog node-write path
CVE-2026-88021 7.5 HIGH Consul vulnerable to an authorization bypass in the Connect service mesh
CVE-2026-87106 6.5 MEDIUM Consul vulnerable to a denial of service in the native RPC listener
CVE-2026-87107 5.4 MEDIUM Consul vulnerable to an authorization bypass in the catalog deregistration path

IV. Related Vulnerabilities

Same product: Tooling
Same vendor: HashiCorp
Same weakness: CWE-532

V. Comments for CVE-2026-87993

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