CVE-2023-33971: Formcreator vulnerable to stored XSS from ##FULLFORM##

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-05-31 · updated 2026-06-17
Weakness: CWE-79

Description

Formcreator is a GLPI plugin which allow creation of custom forms and the creation of one or more tickets when the form is filled. A probable stored cross-site scripting vulnerability is present in Formcreator 2.13.5 and prior via the use of the use of `##FULLFORM##` for rendering. This could result in arbitrary javascript code execution in an admin/tech context. A patch is unavailable as of time of publication. As a workaround, one may use a regular expression to remove `< > "` in all fields.

Affected products

pluginsGLPI formcreator: 2.13.5

References

https://github.com/pluginsGLPI/formcreator/security/advisories/GHSA-777g-3848-8r3g
https://github.com/pluginsGLPI/formcreator/security/advisories/GHSA-777g-3848-8r3g

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