Description
Cross-site scripting (XSS) vulnerability in the link dialogue in GUI editor in MoinMoin before 1.9.10 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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 9 | moin | 1.9.9-1+deb9u1 | DSA-4318-1 |
| Debian 8 | moin | 1.9.8-1+deb8u2 | DLA-1546-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | moin | 1.9.9-1ubuntu1.1 | USN-3794-1 |
| Ubuntu 16.04 LTS | moin | 1.9.8-1ubuntu1.16.04.2 | USN-3794-1 |
| Ubuntu 14.04 LTS | moin | 1.9.7-1ubuntu2.2 | USN-3794-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | moin | < 1.9.10 | 1.9.10 | GHSA-42fp-4hm3-j8r7 |
Advisories 3
- DSA-4318-1 moin - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1546-1 moin - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3794-1 moin vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
References
- https://github.com/moinwiki/moin-1.9/commit/70955a8eae091cc88fd9a6e510177e70289ec024
- DSA-4318 vendor-advisory
- http://moinmo.in/SecurityFixes
- [debian-lts-announce] 20181015 [SECURITY] [DLA 1546-1] moin security update mailing-list
- USN-3794-1 vendor-advisory
- openSUSE-SU-2018:3105 vendor-advisory