Description
MoinMoin 1.9.8 allows remote attackers to conduct "JavaScript injection" attacks by using the "page creation" approach, related to a "Cross Site Scripting (XSS)" issue affecting the action=AttachFile (via page name) component.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | moin | 1.9.8-1+deb8u1 | DSA-3715-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | moin | 1.9.8-1ubuntu1.16.04.1 | USN-3137-1 |
| Ubuntu 14.04 LTS | moin | 1.9.7-1ubuntu2.1 | USN-3137-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | moin | < 1.9.9 | 1.9.9 | GHSA-3x76-j3jj-439j |
Advisories 2
- DSA-3715-1 moin - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3137-1 moin vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
References
- USN-3137-1 vendor-advisory
- 94259 vdb-entry
- DSA-3715 vendor-advisory
- https://www.curesec.com/blog/article/blog/MoinMoin-198-XSS-175.html