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Fencer Vulns
high 7.5

CVE-2020-13670 json

Exposure of Resource to Wrong Sphere in Drupal Core

published 2020-09-16 6 y ago modified 2026-09-19 51 d ago also BIT-drupal-2020-13670 , DRUPAL-CORE-2020-011 , EUVD-2022-1104 , GHSA-mmjr-5q74-p3m4

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

Information Disclosure vulnerability in file module of Drupal Core allows an attacker to gain access to the file metadata of a permanent private file that they do not have access to by guessing the ID of the file. 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-2020-13670 updated cvss 5.6

drupal: Information disclosure in file module of drupal core

  • 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

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-668 Exposure of Resource to Wrong Sphere

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.