CVE-2016-4972 json
OpenStack Murano Code Execution
published 2016-09-26 10 y ago modified 2026-07-01 4 mo ago also GHSA-87r7-q54j-f9qg , PYSEC-2016-22 , PYSEC-2026-429 , PYSEC-2026-430 , EUVD-2016-0028
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.2%
- EPSS 3.2% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi murano 1.0.3
- pypi murano-dashboard 1.0.3, 2.0.1
- pypi python-muranoclient 0.7.3, 0.8.5
- murano Debian 12 1:2.0.1-1
- murano-dashboard Debian 12 1:2.0.0-5
- python-muranoclient Debian 12 0.8.3-4
debian advisories DEBIAN-CVE-2016-4972
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-2016-4972 updated cvss 6.8
openstack-murano: RCE via usage of insecure YAML tags
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
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
Exploit prediction
3.19% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | murano | <1.0.3 |
1.0.3 |
| pypi | murano-dashboard | <1.0.3 >=2.0.0, <2.0.1 |
1.0.3 2.0.1 |
| pypi | python-muranoclient | <0.7.3 >=0.8.0, <0.8.5 >=0.8, <0.8.5 |
0.7.3 0.8.5 |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
bugs.launchpad.net
/python-muranoclient/+bug/1586078
web, patch, vendor-advisory
-
openwall.com
/lists/oss-security/2016/06/23/8
mailing-list, web, patch, third-party-advisory
-
bugs.launchpad.net
/murano/+bug/1586079
web, patch, vendor-advisory
-
github.com
/openstack/murano/commit/28de8c36c9dbe4aaf4d062e6fb6099afd437f49b
web
-
nvd.nist.gov
/vuln/detail/CVE-2016-4972
advisory
-
github.com
/openstack/murano
package
-
github.com
/openstack/murano/blob/c898a310afbc27f12190446ef75d8b0bd12115eb/releasenotes/notes/safeloader-cve-2016-4972-19
web
-
github.com
/openstack/murano/blob/c898a310afbc27f12190446ef75d8b0bd12115eb/releasenotes/source/locale/en_GB/LC_MESSAGES/r
web
-
github.com
/pypa/advisory-database/tree/main/vulns/python-muranoclient/PYSEC-2016-22.yaml
web
-
pypi.org
/project/murano
package
-
github.com
/advisories/GHSA-87r7-q54j-f9qg
advisory
-
pypi.org
/project/murano-dashboard
package
Sources
- CVE List CVE-2016-4972
- GitHub Advisory GHSA-87r7-q54j-f9qg
- NVD CVE-2016-4972
- OSV PYSEC-2026-429
- OSV PYSEC-2026-430
- OSV PYSEC-2016-22
Fencer Intel 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.