Contao may have unencoded insert tags in the frontend
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.1epss 0.5%
exploitation probability
0.5%top 60% of all CVEs
observed exploitation
nono source reports it
Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, it is possible to inject insert tags in frontend forms if the output is structured in a very specific way. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, do not output user data from frontend forms next to each other, always separate them by at least one character.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
contao · contaoReferences
https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generatorhttps://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016bhttps://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8