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Fencer Vulns
critical 9.8

CVE-2020-25074 json

MoinMoin vulnerable to remote code execution via cache action

published 2020-11-10 5 y ago modified 2026-09-10 1 mo ago also GHSA-52q8-877j-gghq , PYSEC-2020-67 , EUVD-2020-0114

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.6%
EPSS 6.6% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The cache action in action/cache.py in MoinMoin through 1.9.10 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.

Patch / fix

  • pypi moin 1.9.11
  • moin Ubuntu 16.04 LTS 1.9.8-1ubuntu1.16.04.3
  • moin Ubuntu 18.04 LTS 1.9.9-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2020-25074

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • moinmoin-wiki Package Hub 15 SP2 1.9.11-bp152.4.3.1
  • moinmoin-wiki openSUSE Leap 15.2 1.9.11-lp152.3.3.1

opensuse advisories openSUSE-SU-2020:1998-1openSUSE-SU-2020:1966-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-25074 updated cvss 8.8

moin: remote code execution via cache action

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.55% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi moin
<1.9.11
1.9.11

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.