High severity · published Jul 31, 2026
CVE-2026-55100
hashi-vault-js has a path traversal and query parameter injection
8.7
CVSS
0.6%
EPSS
No
On KEV
Description
hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault API. Prior to 0.5.2, src/Vault.js concatenates unencoded identifier values including name, username, group, role, and version into Vault request paths and query strings instead of using encodeURIComponent() and URLSearchParams, allowing path traversal and query parameter injection. This issue is fixed in version 0.5.2.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
hashi-vault-js · kyndryl-open-source
< 0.5.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55100
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55100
github.com
https://github.com/kyndryl-open-source/hashi-vault-js/commit/ea2f76052d366a08f35f62ef4c12b6a334c91ec2
github.com
https://github.com/kyndryl-open-source/hashi-vault-js/pull/66
github.com
https://github.com/kyndryl-open-source/hashi-vault-js/releases/tag/v0.5.2
github.com
https://github.com/kyndryl-open-source/hashi-vault-js/security/advisories/GHSA-g956-2f74-rmv7
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