openstack-murano: RCE via usage of insecure YAML tags
Published Sep 26, 2016
9.3
CRITICALCVSS 4.0
EPSS 3.19%
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.
Affected products
No data.
- ≤ 2.0.0
- ≤ 1.0.2
- ≤ 1.0.2
- ≤ 0.7.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat OpenStack Platform and Red Hat Enterprise Linux OpenStack Platform do not include or support openstack-murano, and are therefore not affected by this flaw in any supported configuration.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.19% (0.03193) | 87.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.17% (0.03166) | 86.30th | v5 (v2026.06.15) |
| Mar 30, 2025 | 4.19% (0.04194) | 87.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 15.97% (0.15973) | 91.33th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.66% (0.03661) | 87.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.77% (0.02765) | 90.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.70% (0.02704) | 88.82th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.79% (0.05785) | 90.41th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.79% (0.05785) | 89.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.79% (0.05785) | 77.27th | v2 (v2022.01.01) |
References (12)
- http://www.openwall.com/lists/oss-security/2016/06/23/8 mailing-listx_refsource_MLISTPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-4972 Vendor Advisory
- https://bugs.launchpad.net/murano/+bug/1586079 x_refsource_CONFIRMPatchVendor Advisory
- https://bugs.launchpad.net/python-muranoclient/+bug/1586078 x_refsource_CONFIRMPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1344232 Issue Tracking
- https://github.com/advisories/GHSA-87r7-q54j-f9qg Advisory
- https://github.com/openstack/murano/blob/c898a310afbc27f12190446ef75d8b0bd12115eb/releasenotes/notes/safeloader-cve-2016-4972-19035a2a091ec30a.yaml
- https://github.com/openstack/murano/blob/c898a310afbc27f12190446ef75d8b0bd12115eb/releasenotes/source/locale/en_GB/LC_MESSAGES/releasenotes.po
- https://github.com/openstack/murano/commit/28de8c36c9dbe4aaf4d062e6fb6099afd437f49b
- https://github.com/pypa/advisory-database/tree/main/vulns/python-muranoclient/PYSEC-2016-22.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2016-4972
- https://www.cve.org/CVERecord?id=CVE-2016-4972
Change history (0)
No recorded changes yet.