VulnerabilityModified

CVE-2016-4972

CRITICAL 9.8EPSS 3.19%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

OpenStack Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), and python-muranoclient before 0.7.3 (liberty) and 0.8.x before 0.8.5 (mitaka) improperly use loaders inherited from yaml.Loader when parsing MuranoPL and UI files, which allows remote attackers to create arbitrary Python objects and execute arbitrary code via crafted extended YAML tags in UI definitions in packages.

CVSS 3.0: 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 3.19% probability · 88th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-20
Affected: openstack/mitaka-murano · openstack/murano · openstack/murano-dashboard · openstack/python-muranoclient
Source: secalert@redhat.com

EPSS trend

EPSS 3.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.openwall.com/lists/oss-security/2016/06/23/8Patch, Third Party Advisory
https://bugs.launchpad.net/murano/+bug/1586079Patch, Vendor Advisory
https://bugs.launchpad.net/python-muranoclient/+bug/1586078Patch, Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/06/23/8Patch, Third Party Advisory
https://bugs.launchpad.net/murano/+bug/1586079Patch, Vendor Advisory
https://bugs.launchpad.net/python-muranoclient/+bug/1586078Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.