Medium severity · published Aug 7, 2026
CVE-2026-19016
Authorization bypass for session deletion in the transaction API
4.2
CVSS
0.3%
EPSS
No
On KEV
Description
Consul Community Edition and Consul Enterprise 1.19.1 through 2.0.2 did not enforce the {{session:write}} ACL permission for session deletion operations submitted through the transaction API. An authenticated caller with network access to the Consul server RPC port could delete arbitrary sessions without holding the required permission. This vulnerability, CVE-2026-19016, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Consul · HashiCorp
1.19.1 before 2.0.3 · source: vendor
CE
Consul Enterprise · HashiCorp
1.19.1 before 2.0.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19016
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19016
discuss.hashicorp.com
https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629
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