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Vulnerability details: VCID-j3e7-e9v2-5yh5
Vulnerability ID VCID-j3e7-e9v2-5yh5
Aliases CVE-2024-28191
GHSA-747v-52c4-8vj8
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 2.8
Risk 1.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00988 https://api.first.org/data/v1/epss?cve=CVE-2024-28191
cvssv3.1 3.1 https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
generic_textual LOW https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
ssvc Track https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
cvssv3.1_qr LOW https://github.com/advisories/GHSA-747v-52c4-8vj8
cvssv3.1 3.1 https://github.com/contao/contao
generic_textual LOW https://github.com/contao/contao
cvssv3.1 3.1 https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
generic_textual LOW https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
ssvc Track https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
cvssv3.1 3.1 https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
generic_textual LOW https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
ssvc Track https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
cvssv3.1 3.1 https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
cvssv3.1_qr LOW https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
generic_textual LOW https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
ssvc Track https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
cvssv3.1 3.1 https://nvd.nist.gov/vuln/detail/CVE-2024-28191
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2024-28191
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2024-28191
https://github.com/contao/contao
388859dcf110ca70e0fae68a2a5579ab6a702919 https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
474a2fc25f1d84d786aba8c6d234af99e64d016b https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
CVE-2024-28191 https://nvd.nist.gov/vuln/detail/CVE-2024-28191
GHSA-747v-52c4-8vj8 https://github.com/advisories/GHSA-747v-52c4-8vj8
GHSA-747v-52c4-8vj8 https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
insert-tag-injection-via-the-form-generator https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-29T16:07:38Z/ Found at https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/contao/contao
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-29T16:07:38Z/ Found at https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-29T16:07:38Z/ Found at https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016b
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-29T16:07:38Z/ Found at https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2024-28191
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7728
EPSS Score 0.00988
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-10T18:32:13.270889+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2024/28xxx/CVE-2024-28191.json 38.6.0