High severity · published Sep 10, 2026
CVE-2026-87993
Consul-template vulnerable to an information disclosure issue in error handling
7.7
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tooling · HashiCorp
0.27.2 before 0.43.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-87993
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-87993
discuss.hashicorp.com
https://discuss.hashicorp.com/t/hcsec-2026-38-consul-template-vulnerable-to-an-information-disclosure-issue-in-error-handling/77740
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