CVE-2026-19017 Consul vulnerable to partial arbitrary file read via Vault Connect CA provider
Privileged attackers can read arbitrary files on the server via Vault Connect CA provider, exposing sensitive secrets.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-19017?
CVE-2026-19017 is a medium-severity path traversal vulnerability in HashiCorp Consul, published on 7 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Consul Community Edition and Consul Enterprise 1.18.21 through 2.0.2 are vulnerable to a partial arbitrary file read when configured to use the Vault Connect CA provider with JWT or AppRole authentication. A privileged attacker with `operator:write` permission may direct Consul to read and forward credential files outside the intended scope, potentially leading to the exfiltration of sensitive secrets from the Consul server host. This vulnerability, CVE-2026-19017, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Weakness: CWE-862
Which versions are affected by CVE-2026-19017?
1 open source package ship an affected version, including consul.
| Package | Affected | Fixed in |
|---|---|---|
consul Bitnami | From 1.18.21 | 2.0.3 |
How do I fix CVE-2026-19017?
Upgrade consul to 2.0.3 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-19017 being exploited?
There is no known exploitation of CVE-2026-19017 in the wild and no public exploit code.
Sources
Also known as BIT-consul-2026-19017, DEBIAN-CVE-2026-19017, GHSA-jgv4-5fjv-3xp7, MINI-78x7-f69c-h942, MINI-vhpv-68f9-mxmp, UBUNTU-CVE-2026-19017.