CVE-2018-15886

mediumpriority · track · 30EPSS 0.016 · 76 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.65% (76th) EPSS

CVSS 6.5 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Monstra CMS 3.0.4 does not properly restrict modified Snippet content, as demonstrated by the admin/index.php?id=snippets&action=edit_snippet&filename=google-analytics URI, which allows attackers to execute arbitrary PHP code by placing this code after a <?php substring.

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

v3.07.2highCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.06.6mediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimary

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
monstra monstra= 3.0.4nvdUScpe:2.3:a:monstra:monstra:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2018-09-10modified 2026-06-17

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+10444 more

references (3)

External citations — patches, advisories, analysis.

https://github.com/monstra-cms/monstra/issues/455 cnnvd
https://github.com/monstra-cms/monstra/issues/455 enisa_euvd
https://github.com/monstra-cms/monstra/issues/455ExploitThird Party Advisorynvd

scry

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