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Fencer Vulns
medium 6.1

CVE-2020-13668 json

Access bypass in Drupal Core 8/9

published 2022-02-11 4 y ago modified 2026-09-08 2 mo ago also BIT-drupal-2020-13668 , EUVD-2022-1096 , GHSA-m6q5-wv4x-fv6h

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Access Bypass vulnerability in Drupal Core allows for an attacker to leverage the way that HTML is rendered for affected forms in order to exploit the vulnerability. This issue affects: Drupal Core 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.

Patch / fix

  • packagist drupal/core 8.8.10, 8.9.6, 9.0.6
  • packagist drupal/drupal 8.8.10, 8.9.6, 9.0.6
  • bitnami drupal 8.8.10, 8.9.6, 9.0.6
  • Drupal Core 8.8.10, 8.9.6, 9.0.6

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-2020-13668 updated cvss 7.5

drupal: Access control bypass

  • 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

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist drupal/core
>=8.0.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
8.8.10
8.9.6
9.0.6
packagist drupal/drupal
>=8.0.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
8.8.10
8.9.6
9.0.6
bitnami drupal
>=8.8.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
8.8.10
8.9.6
9.0.6

Affected products

  • Drupal Core

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.