CVE-2020-13666

mediumpriority · track · 25EPSS 0.029 · 87 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.93% (87th) EPSS

CVSS 4.3 · medium

Is it mine?

28 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-26

Cross-site scripting vulnerability in Drupal Core. Drupal AJAX API does not disable JSONP by default, allowing for an XSS attack. This issue affects: Drupal Drupal Core 7.x versions prior to 7.73; 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.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.16.1mediumAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-79US

affected products (28)

Products and version ranges known to be affected.

Drupal drupal core7.x → 7.73enisa_euvdEU
Drupal drupal core8.8.x → 8.8.10enisa_euvdEU
Drupal drupal core8.9.x → 8.9.6enisa_euvdEU
Drupal drupal core9.0.x → 9.0.6enisa_euvdEU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Drupal7.0 → 7.73fstec_bduRU
Сообщество свободного программного обеспечения Drupal8.8.0 → 8.8.10fstec_bduRU
Сообщество свободного программного обеспечения Drupal8.9.0 → 8.9.6fstec_bduRU
Сообщество свободного программного обеспечения Drupal9.0.0 → 9.0.6fstec_bduRU
drupal drupal7.0 → 7.73nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal8.8.0 → 8.8.10nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal8.9.0 → 8.9.6nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal9.0.0 → 9.0.6nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Bitnami drupal7.0.0 → 7.73.0osvUSpkg:bitnami/drupal
Bitnami drupal8.8.0 → 8.8.10osvUSpkg:bitnami/drupal
Bitnami drupal8.9.0 → 8.9.6osvUSpkg:bitnami/drupal
Bitnami drupal9.0.0 → 9.0.6osvUSpkg:bitnami/drupal
Packagist drupal/core7.0.0 → 7.73osvUSpkg:composer/drupal/core

showing 20 of 28

advisories (3)

Vendor and ecosystem advisories describing this.

GHSA-8jj2-x2gc-ggm7Drupal Core Cross-site scripting vulnerability2022-05-24ghsa · osvUS
Cross-site scripting vulnerability in Drupal Core. Drupal AJAX API does not disable JSONP by default, allowing for an XSS attack. This issue affects: Drupal Drupal Core 7.x versions prior to 7.73; 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.
BIT-drupal-2020-136662024-03-06vendor · osvUS
Cross-site scripting vulnerability in Drupal Core. Drupal AJAX API does not disable JSONP by default, allowing for an XSS attack. This issue affects: Drupal Drupal Core 7.x versions prior to 7.73; 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.
DRUPAL-CORE-2020-0072020-09-16vendor · osvUS
The Drupal AJAX API does not disable JSONP by default, which can lead to cross-site scripting.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2021-05-05modified 2026-06-17

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+52968 more

references (8)

External citations — patches, advisories, analysis.

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