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Fencer Vulns
medium 6.1

CVE-2022-43556 json

Concrete CMS vulnerable to cross-site scripting in the text input field

published 2022-12-05 3 y ago modified 2026-06-17 4 mo ago also GHSA-xj33-8r43-r227 , EUVD-2022-7773

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to XSS in the text input field since the result dashboard page output is not sanitized. The Concrete CMS security team has ranked this 4.2 with CVSS v3.1 vector AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N Thanks @_akbar_jafarli_ for reporting. Remediate by updating to Concrete CMS 8.5.10 and Concrete CMS 9.1.3.

Patch / fix

  • packagist concrete5/concrete5 8.5.10, 9.1.3
  • concretecms concrete_cms 8.5.10

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist concrete5/concrete5
<8.5.10
>=9.0.0, <9.1.3
8.5.10
9.1.3

Affected products

  • n/a https://github.com/concretecms/concretecms

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.