What is CVE-2020-15171?

CVE-2020-15171 is a medium-severity vulnerability in Xwiki, classified under Code Injection. CVSS score: 6.6/10. Published 2020-09-10.

How severe is CVE-2020-15171?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Is CVE-2020-15171 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Xwiki

CVE-2020-15171

In XWiki before versions 11.10.5 or 12.2.1, any user with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution. The only workaround is to give SCRIPT right only to trusted users.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.013 (68.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Xwiki
Xwiki Xwiki-platform — versions <11.10.5, >=12.0.0, <12.2.1

Weakness classification (CWE)

Public proof-of-concept exploits

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2020-15171?: CVE-2020-15171 is a medium-severity vulnerability in Xwiki, classified under Code Injection. CVSS score: 6.6/10. Published 2020-09-10.
How severe is CVE-2020-15171?: Medium severity. CVSS v3 base score is 6.6 out of 10.
Is CVE-2020-15171 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.