GHSA-876c-qmcf-cxv6 CVE-2010-0667 PYSEC-2010-14

MoinMoin Exposure of Sensitive Disclosure when GATEWAY_INTERFACE variable is set

High PyPI

Severity: 0.0 / 10; High · CVSS 4.0
Exploit chance (EPSS): 1.87%; Chance of exploitation in the next 30 days. Higher than 79.34% of scored vulnerabilities.
Known exploited: No; Not in CISA's catalog
Weakness: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Fix: 1.9.1; Upgrade moin to this version or later

Description

MoinMoin 1.9 before 1.9.1 does not perform the expected clearing of the sys.argv array in situations where the GATEWAY_INTERFACE environment variable is set, which allows remote attackers to obtain sensitive information via unspecified vectors.

Affected versions

PyPI

Package	Vulnerable	Fixed in
moin	`>= 1.9, < 1.9.1`	`1.9.1`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

moin PyPI → `1.9.1`

pip

pip install --upgrade "moin>=1.9.1"

poetry

poetry add "moin>=1.9.1"

uv

uv add "moin>=1.9.1"

Severity breakdown

CVSS 4.0 0.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: None
User interaction: None
Confidentiality (vulnerable system): High
Integrity (vulnerable system): None
Availability (vulnerable system): None
Confidentiality (subsequent systems): None
Integrity (subsequent systems): None
Availability (subsequent systems): None

CVSS 3.1 7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Weakness

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

How to prevent it

Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

Advisories

Packages

github.com/moinwiki/moin

Timeline

Feb 26, 2010 Published
Jun 10, 2026 Last updated by the source
Nov 1, 2026 Latest EPSS score

Advisory	Severity	Why it's related
GHSA-cx94-3h5x-cc57 MoinMoin Cross-site scripting (XSS) vulnerability in the antispam feature	Medium	Also affects moin
GHSA-7hjm-hqgj-xv9f MoinMoin Multiple cross-site scripting (XSS) vulnerabilities	Medium	Also affects moin
GHSA-jj2f-57jg-5rm6 MoinMoin Improper Access Control	Medium	Also affects moin
GHSA-8fj9-pj4p-4vq7 MoinMoin Multiple cross-site scripting (XSS) vulnerabilities	Medium	Also affects moin
GHSA-6766-r2rx-mfw9 MoinMoin Directory traversal vulnerability	Medium	Also affects moin
GHSA-775g-4482-pm94 MoinMoin Multiple cross-site scripting (XSS) vulnerabilities	Medium	Also affects moin
GHSA-53wj-6m7w-j6mj MoinMoin Cross-site scripting (XSS) vulnerability	Medium	Also affects moin
GHSA-cmg7-xr2j-4r9v MoinMoin Improper ACL handling for calendars and includes	Medium	Also affects moin

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