High severity · published Jul 24, 2026
CVE-2026-48036
Hulumi: Drift classifier fails open on adapter errors and over-promotes Mixed verdicts
8.4
CVSS
0.5%
EPSS
No
On KEV
Description
Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, consumers running drift detection in CI / cron could see transient adapter failures silently cached as "all clear" — masking real attacks for up to six hours — or see ordinary provider-version churn falsely promoted to incident severity. Either way, the verdict source was unreliable for downstream incident workflows that gate on it. This issue has been patched in version 1.4.0.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HU
hulumi · kerberosmansour
< 1.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48036
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48036
github.com
https://github.com/kerberosmansour/hulumi/pull/178
github.com
https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0
github.com
https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-32g3-35g9-wc9g
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