Answer in brief
CVE-2020-25074 records a High severity (CVSS 8.8) vulnerability in MoinMoin vulnerable to remote code execution via cache action. The current sources do not mark it as known exploited. The current feed maps moin (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps moin (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| moinpypi | >=0 <1.9.11 | 1.9.11 |
Published upstream
Nov 11, 2020
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
### Impact The cache action in action/cache.py allows directory traversal through a crafted HTTP request. An attacker who can upload attachments to the wiki can use this to achieve remote code execution. ### Patches Users are strongly advised to upgrade to a patched version. MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes. ### Workarounds It is not advised to work around this, but to upgrade MoinMoin to a patched version. That said, a work around via disabling the `cache` or the `AttachFile` action might be possible. Also, it is of course helpful if you give `write` permissions (which include uploading attachments) only to trusted users. ### Credits This vulnerability was discovered by Michael Chapman. ### For more information If you have any questions or comments about this advisory, email me at [[email protected]](mailto:[email protected]).
Quoted source text, attributed separately from HOL analysis.