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TI-2020-12045 Aliases CVE-2020-15275GHSA-4q96-6xhq-ff43

malicious SVG attachment causing stored XSS vulnerability in MoinMoin

Priority MEDIUM 41CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

MoinMoin is a wiki engine. In MoinMoin before version 1.9.11, an attacker with write permissions can upload an SVG file that contains malicious javascript. This javascript will be executed in a user's browser when the user is viewing that SVG file on the wiki. 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.

Why it matters now

EPSS 0.01746 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed moin-1.9 (moinwiki): 1.9.11moin (PyPI): 1.9.11

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
moinwikimoin-1.9before 1.9.111.9.11Patch availableCNA
—moin (PyPI)before 1.9.111.9.11Patch availableGHSA-4q96-6xhq-ff43
  • moin-1.9 Vendormoinwiki Affected before 1.9.11 Fixed in 1.9.11 Patch available CNA
  • moin (PyPI) Vendor— Affected before 1.9.11 Fixed in 1.9.11 Patch available GHSA-4q96-6xhq-ff43

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:moinmo:moinmoin:*:*:*:*:*:*:*:*before 1.9.11VulnerableMoinmo
  • cpe:2.3:a:moinmo:moinmoin:*:*:*:*:*:*:*:* Versions before 1.9.11 Vulnerable ·Moinmo

Remediation

  • Fix · CNA moin-1.9 (moinwiki) Fixed in 1.9.11
  • Fix · GHSA-4q96-6xhq-ff43 moin (PyPI) Fixed in 1.9.11 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15275
  2. 2026-10-03 Alias added: GHSA-4q96-6xhq-ff43

References

Exploit 1

Patch 1

Advisory 3

Other 3

  • TI-2012-05045 Multiple unrestricted file upload vulnerabilities in the (1) twikidraw… CVSS 2.0MEDIUM 6.0
  • TI-2020-15333 The cache action in action/cache.py in MoinMoin through 1.9.10 allows directory traversal… CVSS 3.1CRITICAL 9.8
  • TI-2012-05213 Multiple directory traversal vulnerabilities in the (1) twikidraw (action/twikidraw.py)… CVSS 2.0MEDIUM 6.0
  • TI-2009-04518 MoinMoin 1.7.x before 1.7.3 and 1.8.x before 1.8.3 checks parent ACLs in certain… CVSS 2.0HIGH 7.5
  • TI-2010-00685 The default configuration of cfg.packagepages_actions_excluded in MoinMoin before 1.8.7… CVSS 2.0HIGH 7.5
  • TI-2010-00638 MoinMoin before 1.8.7 and 1.9.x before 1.9.2 does not properly sanitize user profiles… CVSS 2.0HIGH 7.5
See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences