CVE-2021-37626

mediumpriority · track · 29EPSS 0.013 · 69 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.25% (69th) EPSS
CVSS 6.5 · medium
Is it mine?
33 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Contao is an open source CMS that allows you to create websites and scalable web applications. In affected versions it is possible to load PHP files by entering insert tags in the Contao back end. Installations are only affected if they have untrusted back end users who have the rights to modify fields that are shown in the front end. Update to Contao 4.4.56, 4.9.18 or 4.11.7 to resolve. If you cannot update then disable the login for untrusted back end users.

01

cvss

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

7.2
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.2

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9
v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 1.2 · impact 5.9
v3.16.7mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Lsecondary · OSV
v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94USCWE-94US
03

affected products (33)

Products and version ranges known to be affected.

showing 20 of 33
04

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-r6mv-ppjc-4hgrPHP file inclusion via insert tags2021-08-23ghsa · osvUS

    ### Impact It is possible for untrusted users to load arbitrary PHP files via insert tags. Installations are only affected if there are untrusted back end users. ### Patches Update to Contao 4.4.56, 4.9.18 or 4.11.7. ### Workarounds Disable the login for untrusted back end users. ### References https://contao.org/en/security-advisories/php-file-inclusion-via-insert-tags ### For more information If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).

05

also known as (4)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bdunvdosvNVDCVE.orgMITRE
published 2021-08-11modified 2026-06-17
08

references (9)

External citations — patches, advisories, analysis.

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