Vulnerability · Published Nov 11, 2020 · Assigned by GitHub_M

CVE-2020-15275malicious SVG attachment causing stored XSS vulnerability in MoinMoin

High 8.7

In plain English

A high-severity cross-site scripting in moin-1.9 from moinwiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)1.7%top 22.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	moin	1.9.11	GHSA-4q96-6xhq-ff43
PyPI	moin	1.9.11	PYSEC-2020-241

Affected products (as reported)

Vendor	Product	Versions
moinwiki	moin-1.9	< 1.9.11

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/moinwiki/moin-1.9/security/advisories/GHSA-4q96-6xhq-ff43 x_refsource_CONFIRM
https://github.com/moinwiki/moin-1.9/releases/tag/1.9.11 x_refsource_MISC
https://github.com/moinwiki/moin-1.9/commit/31de9139d0aabc171e94032168399b4a0b2a88a2 x_refsource_MISC
https://advisory.checkmarx.net/advisory/CX-2020-4285 x_refsource_MISC