CVE-2017-6927

Name: CVE-2017-6927
Creator: NVD / NIST
Published: 2018-03-01T23:29:00.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.70%

Last modified Jun 17, 2026

CVE-2017-6927 is a vulnerability of currently unknown severity. Drupal 8.4.x versions before 8.4.5 and Drupal 7.x versions before 7.57 has a Drupal.checkPlain() JavaScript function which is used to escape potentially dangerous text before outputting it to HTML (as JavaScript output does not typically go through Twig autoescaping). This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

Drupal 8.4.x versions before 8.4.5 and Drupal 7.x versions before 7.57 has a Drupal.checkPlain() JavaScript function which is used to escape potentially dangerous text before outputting it to HTML (as JavaScript output does not typically go through Twig autoescaping). This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances. The PHP functions which Drupal provides for HTML escaping are not affected.

Metrics

EPSS Probability

1.70%

74.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Drupal	Drupal	>= 7.0, < 7.57
Drupal	Drupal	>= 8.4.0, < 8.4.5
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.securityfocus.com/bid/103138Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4123Third Party Advisory
https://www.drupal.org/sa-core-2018-001Vendor Advisory
http://www.securityfocus.com/bid/103138Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/02/msg00030.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4123Third Party Advisory
https://www.drupal.org/sa-core-2018-001Vendor Advisory

Timeline

Published: Mar 1, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6927?

How severe is CVE-2017-6927?

Severity scoring for CVE-2017-6927 is pending analysis. The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6927?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6927?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST