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Fencer Vulns
medium 5.4

CVE-2026-105820 json

Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

published 2026-10-07 32 d ago modified 2026-10-16 23 d ago also BIT-vault-2026-105820 , EUVD-2026-94647

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.

Patch / fix

  • bitnami vault 1.19.23, 1.20.17, 1.21.12, 2.1.2
  • HashiCorp Vault Enterprise 1.19.23, 1.20.17, 1.21.12, 2.1.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-105820 updated cvss 5.4

vault: Vault: Privilege escalation via path traversal in ACL policy cache

  • Red Hat Openshift Data Foundation 4 odf4/cephcsi-rhel9, odf4/mcg-cli-rhel9, odf4/mcg-rhel9-operator
    under investigation

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
31 d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami vault
>=0.0.1, <1.19.23
>=1.20.0, <1.20.17
>=1.21.0, <1.21.12
>=2.0.0, <2.1.2
1.19.23
1.20.17
1.21.12
2.1.2

Affected products

  • HashiCorp Vault Enterprise

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.