Executive brief
MoinMoin is a popular open-source wiki platform used to create collaborative knowledge repositories. This vulnerability allows attackers to inject malicious scripts into wiki pages through multiple action modules, enabling them to steal user sessions, deface content, or redirect users to malicious sites. The flaw affects versions 1.7.3 and earlier, as well as 1.9.x versions prior to 1.9.3.
Technical details
Multiple cross-site scripting (XSS) vulnerabilities exist in MoinMoin due to improper sanitization of user-supplied content in the LikePages.py, chart.py, and userprofile.py action modules. These are CWE-79 input validation flaws where crafted HTML or JavaScript can be injected through action parameters. The vulnerability is network-reachable and requires no authentication, but relies on user interaction (a victim must visit a malicious link or perform an action). An attacker can execute arbitrary JavaScript in the context of the victim's browser session. Patches are available in MoinMoin 1.9.3 and later versions.
Affected products
- MoinMoin MoinMoin 1.7.3 and earlier, 1.9.0 through 1.9.2
Timeline
- 2010-08-05: disclosed
- 2010: patched: Fixed in 1.9.3
- 2022-05-17: advisory: GHSA published