security/__init__.py in MoinMoin 1.9 through 1.9.4 does not properly handle group names that contain virtual group names such as "All," "Kno
security/__init__.py in MoinMoin 1.9 through 1.9.4 does not properly handle group names that contain virtual group names such as "All," "Known," or "Trusted," which allows remote authenticated users with virtual group membership to be treated as a member of the group.
- Published
- Sep 10, 2012
- Updated
- Jun 16, 2026
- EPSS
- 2.1% · 81th percentile
- CWE
- CWE-264
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Report tools
Action score
25
Monitor
Low priority for now.
- CVSS
- 24 / 40 · 6.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| moinmo | moinmoin | cpe:2.3:a:moinmo:moinmoin |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- moinmo moinmoin1.9.0
- moinmo moinmoin1.9.1
- moinmo moinmoin1.9.2
- moinmo moinmoin1.9.3
- moinmo moinmoin1.9.4
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:6.0 | moin | before 1.9.3-1+squeeze2 | 1.9.3-1+squeeze2 |
| PyPI | moin | from 1.9 · before 1.9.5 | 1.9.5 |
Same product
moinmo: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-25074The cache action in action/cache.py in MoinMoin through 1.9.10 allows directory traversal through a crafted HTTP request.41Plan
- CVE-2012-6081Multiple unrestricted file upload vulnerabilities in the (1) twikidraw (action/twikidraw.py) and (2) anywikidraw (action/anywikidraw.py) act35Monitor
- CVE-2009-4762MoinMoin 1.7.x before 1.7.3 and 1.8.x before 1.8.3 checks parent ACLs in certain inappropriate circumstances during processing of hierarchic31Monitor
- CVE-2010-0717The default configuration of cfg.packagepages_actions_excluded in MoinMoin before 1.8.7 does not prevent unsafe package actions, which has u31Monitor
- CVE-2010-0669MoinMoin before 1.8.7 and 1.9.x before 1.9.2 does not properly sanitize user profiles, which has unspecified impact and attack vectors.31Monitor
- CVE-2012-6495Multiple directory traversal vulnerabilities in the (1) twikidraw (action/twikidraw.py) and (2) anywikidraw (action/anywikidraw.py) actions 30Monitor
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:moin | 1.9.3-1+squeeze2 · Debian:6.0 | Package registry (OSV) |
| PyPI:moin | 1.9.5 | 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.
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
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-264 · Permissions, Privileges, and Access ControlsCVSS vector
AV:N/AC:M/Au:S/C:P/I:P/A:P
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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- hg.moinmo.in/moin/1.9/rev/7b9f39289e16
- moinmo.in/SecurityFixes
- secunia.com/advisories/50474
- secunia.com/advisories/50496
- secunia.com/advisories/50885
- www.debian.org/security/2012/dsa-2538
- www.openwall.com/lists/oss-security/2012/09/04/4
- www.openwall.com/lists/oss-security/2012/09/05/2
- www.ubuntu.com/usn/USN-1604-1
Vendor advisories and official records. Exploit/PoC links are deliberately left out.