CVE-2021-40555

Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2023-02-16

Updated

2025-03-19

Proof-of-concept exploits (1)

• flatCore/flatCore-CMS/issues/56

References

• CVE Record
• NVD entry

Related

• CVE-2017-7877
• CVE-2019-13961
• CVE-2021-39608
• CVE-2021-39609
• CVE-2021-42245
• CVE-2021-40546