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Vulnerability details: VCID-uqcw-p8g2-cfd2
Vulnerability ID VCID-uqcw-p8g2-cfd2
Aliases CVE-2020-13670
GHSA-mmjr-5q74-p3m4
Summary Exposure of Resource to Wrong Sphere 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-668 Exposure of Resource to Wrong Sphere
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2020-13670
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-mmjr-5q74-p3m4
cvssv3.1 7.5 https://github.com/drupal/core
generic_textual HIGH https://github.com/drupal/core
cvssv3.1 7.5 https://github.com/drupal/core/commit/f93a37b713b59f8d24e826bc74378099853eef3d
generic_textual HIGH https://github.com/drupal/core/commit/f93a37b713b59f8d24e826bc74378099853eef3d
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13670.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13670.yaml
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13670.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13670.yaml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-13670
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-13670
cvssv3.1 7.5 https://www.drupal.org/sa-core-2020-011
generic_textual HIGH https://www.drupal.org/sa-core-2020-011
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-13670
https://github.com/drupal/core
https://github.com/drupal/core/commit/f93a37b713b59f8d24e826bc74378099853eef3d
https://www.drupal.org/sa-core-2020-011
CVE-2020-13670 https://nvd.nist.gov/vuln/detail/CVE-2020-13670
CVE-2020-13670.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13670.yaml
CVE-2020-13670.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13670.yaml
GHSA-mmjr-5q74-p3m4 https://github.com/advisories/GHSA-mmjr-5q74-p3m4
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/drupal/core
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/drupal/core/commit/f93a37b713b59f8d24e826bc74378099853eef3d
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13670.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13670.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13670
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://www.drupal.org/sa-core-2020-011
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.62226
EPSS Score 0.00427
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:49:33.447679+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/drupal/core/CVE-2020-13670.yml 38.0.0