CVE-2021-27915

criticalpriority · track · 36EPSS 0.006 · 50 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.62% (50th) EPSS

CVSS 9 · critical

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

Prior to the patched version, there is an XSS vulnerability in the description fields within the Mautic application which could be exploited by a logged in user of Mautic with the appropriate permissions. This could lead to the user having elevated access to the system.

cvss

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

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.6–9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.3 · impact 6

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · ENISA EU

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · security@mautic.orgexploitability 2.1 · impact 5.5

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · OSV

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-80USCWE-80US

affected products (4)

Products and version ranges known to be affected.

Mautic Mautic≤ 1.0.0-beta2 ≤≤ 4.4.11enisa_euvdEU
acquia mautic= 1.0.0nvdUScpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*
acquia mautic1.0.0 → 4.4.12nvdUScpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*
Packagist mautic/core1.0.0-beta2 → 4.4.12osvUSpkg:composer/mautic/core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-2rc5-2755-v422Mautic vulnerable to stored cross-site scripting in description field2024-04-11ghsa · osvUS
### Impact Prior to the patched version, there is an XSS vulnerability in the description fields within the Mautic application which could be exploited by a logged in user of Mautic with the appropriate permissions. This could lead to the user having elevated access to the system. ### Patches Update to 4.4.12 ### Workarounds None ### References - https://owasp.org/www-project-top-ten/2017/A7_2017-Cross-Site_Scripting_(XSS) - https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/07-Input_Validation_Testing/02-Testing_for_Stored_Cross_Site_Scripting If you have any questions or comments about this advisory: Email us at [security@mautic.org](mailto:security@mautic.org)

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2024-09-17modified 2026-06-17

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+53007 more

references (4)

External citations — patches, advisories, analysis.

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