Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak en
Noroxi assessment
Priority: Monitor (action score 21/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.88% (FIRST EPSS); higher than 58.4% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: python-pysaml2 (Debian:12) 4.5.0-4; pysaml2 (PyPI) 4.6.0; ansible (SUSE:HPE Helion OpenStack 8) 2.4.6.0-3.9.1.
Low priority for now. Upgrade to python-pysaml2 (Debian:12) 4.5.0-4; pysaml2 (PyPI) 4.6.0; ansible (SUSE:HPE Helion OpenStack 8) 2.4.6.0-3.9.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak encryption of data.
- Published
- Nov 17, 2017
- Updated
- Jun 16, 2026
- EPSS
- 0.9% · 58th percentile
- CWE
- CWE-330
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| pysaml2 project | pysaml2 | cpe:2.3:a:pysaml2_project:pysaml2 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- pysaml2 project pysaml2before 4.6.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | python-pysaml2 | before 4.5.0-4 | 4.5.0-4 |
| PyPI | pysaml2 | before 4.6.0 | 4.6.0 |
| SUSE:HPE Helion OpenStack 8 | ansible | before 2.4.6.0-3.9.1 | 2.4.6.0-3.9.1 |
| SUSE:HPE Helion OpenStack 8 | ansible1 | before 1.9.6-7.3.1 | 1.9.6-7.3.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-ansible | before 8.0+git.1589740980.6c3bcdc-3.73.1 | 8.0+git.1589740980.6c3bcdc-3.73.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-cluster | before 8.0+git.1585685203.3e71e49-3.36.1 | 8.0+git.1585685203.3e71e49-3.36.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-freezer | before 8.0+git.1586539529.b7d295f-3.21.1 | 8.0+git.1586539529.b7d295f-3.21.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-input-model | before 8.0+git.1589740934.0e0ad61-3.39.1 | 8.0+git.1589740934.0e0ad61-3.39.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-logging | before 8.0+git.1591194866.b7375d0-3.24.1 | 8.0+git.1591194866.b7375d0-3.24.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-mq | before 8.0+git.1589715269.62ad6df-3.22.1 | 8.0+git.1589715269.62ad6df-3.22.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-neutron | before 8.0+git.1590756744.ba84abc-3.42.1 | 8.0+git.1590756744.ba84abc-3.42.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-octavia | before 8.0+git.1590100427.cf4cc8f-3.29.1 | 8.0+git.1590100427.cf4cc8f-3.29.1 |
| SUSE:HPE Helion OpenStack 8 | ardana-osconfig | before 8.0+git.1587034587.eac37b8-3.45.1 | 8.0+git.1587034587.eac37b8-3.45.1 |
| SUSE:HPE Helion OpenStack 8 | caasp-openstack-heat-templates | before 1.0+git.1560518045.ad7dc6d-4.18.1 | 1.0+git.1560518045.ad7dc6d-4.18.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-installation | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-operations | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-opsconsole | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-planning | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-security | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | documentation-hpe-helion-openstack-user | before 8.20200527-1.26.1 | 8.20200527-1.26.1 |
| SUSE:HPE Helion OpenStack 8 | grafana | before 4.6.5-4.9.1 | 4.6.5-4.9.1 |
| SUSE:HPE Helion OpenStack 8 | kibana | before 4.6.3-3.3.1 | 4.6.3-3.3.1 |
| SUSE:HPE Helion OpenStack 8 | openstack-dashboard | before 12.0.5~dev3-3.26.1 | 12.0.5~dev3-3.26.1 |
| SUSE:HPE Helion OpenStack 8 | openstack-dashboard-theme-HPE | before 8+git.1523473653.6599ec8-3.3.1 | 8+git.1523473653.6599ec8-3.3.1 |
+89
Same product
pysaml2 project: all recordsOther highest-scoring records for the same primary product.
- CVE-2016-10127PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.37Monitor
- CVE-2017-1000433pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled.33Monitor
- CVE-2016-10149XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML 32Monitor
- CVE-2020-5390PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is30Monitor
- CVE-2021-21239Open default xmlsec1 key-type preference26Monitor
- CVE-2021-21238SAML XML Signature wrapping26Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:python-pysaml2 | 4.5.0-4 · Debian:12 | Package registry (OSV) |
| PyPI:pysaml2 | 4.6.0 | Package registry (OSV) |
| suse:ansible | 2.2.3.0-12.2 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:crowbar-core | 4.0+git.1580209654.1d112d31f-9.66.5 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:crowbar-ha | 4.0+git.1585316203.d6ad2c8-4.52.4 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:crowbar-openstack | 4.0+git.1589804581.9972163f0-9.71.4 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:grafana | 4.6.5-1.14.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:keepalived | 2.0.19-1.8.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:kibana | 4.6.3-5.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:memcached | 1.5.17-3.6.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:monasca-installer | 20180608_12.47-12.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:openstack-dashboard-theme-SUSE | 2016.2-5.12.4 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:openstack-manila | 3.0.1~dev30-4.12.2 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:openstack-manila-doc | 3.0.1~dev30-4.12.3 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-330 · Use of Insufficiently Random ValuesCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.