Vulnerability · Published Mar 18, 2026 · Assigned by canonical

CVE-2026-32691Timing ownership claim attack on new external back-end secrets

Medium 5.3

In plain English

A medium-severity security flaw in Juju from Canonical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 83.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A race condition in the secrets management subsystem of Juju versions 3.0.0 through 3.6.18 allows an authenticated unit agent to claim ownership of a newly initialized secret. Between generating a Juju Secret ID and creating the secret's first revision, an attacker authenticated as another unit agent can claim ownership of a known secret. This leads to the attacking unit being able to read the content of the initial secret revision.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/juju/juju	3.6.19	GHSA-gfgr-6hrj-85ww
Go	github.com/juju/juju	no fix listed	GO-2026-4769

Affected products (as reported)

Vendor	Product	Versions
Canonical	Juju	3.0.0 – before 3.6.19

Weakness: CWE-708 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/juju/juju/security/advisories/GHSA-gfgr-6hrj-85ww vendor-advisory, vdb-entry