CVE-2026-49741: Typo3/cms core SQL Injection Vulnerability
HIGHCVE-2026-49741 is a HIGH sql injection vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting Typo3/cms core libraries in the Packagist ecosystem. The issue involves typo3 cms has privilege escalation & sql injection in its form framework. Remediation is available by upgrading affected packages to version 14.3.3.
CVE-2026-49741 at a Glance
How to Fix CVE-2026-49741
To remediate this vulnerability, upgrade all affected Typo3/cms core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade typo3/cms-core to 14.3.3Upgrade typo3/cms-form to 14.3.3Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for typo3/cms-coreHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-49741, inspect your project dependencies for Typo3/cms core:
inspect dependencies for typo3/cms-coreAnalyze the terminal output to locate any version of Typo3/cms core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.3.3), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In Typo3/cms core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-49741 Affected Typo3/cms core Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
typo3/cms-core
|
Packagist |
≥ 14.0.0
< 14.3.3
|
14.3.3
|
|
typo3/cms-form
|
Packagist |
≥ 14.0.0
< 14.3.3
|
14.3.3
|
References
Frequently Asked Questions
What is CVE-2026-49741?
Which Typo3/cms core versions are affected?
What version fixes CVE-2026-49741?
Is typo3/cms-core affected?
Is typo3/cms-form affected?
What CWE is associated with CVE-2026-49741?
How can I check Packagist dependencies for CVE-2026-49741?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jh32-v29g-68pq",
"modified" : "2026-06-12T19:32:23Z",
"published" : "2026-06-12T19:32:22Z",
"aliases" : [ "CVE-2026-49741" ],
"summary" : "TYPO3 CMS has Privilege Escalation & SQL Injection in its Form Framework",
"details" : "### Problem\nBackend users with write access to the `form_definition` database table were able to directly create, update, or delete form definition records via `DataHandler`, bypassing the Form Framework's persistence validation and permission checks. This allowed injecting arbitrary form configurations, re-enabling attack vectors originally addressed in [TYPO3-CORE-SA-2018-003](https://typo3.org/security/advisory/typo3-core-sa-2018-003), including SQL injection and privilege escalation.\n\n### Solution\nUpdate to TYPO3 version 14.3.3 LTS that fixes the problem described.\n\n### Credits\nTYPO3 CMS thanks Selçuk Güney for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.\n\n### Resources\n* [TYPO3-CORE-SA-2026-017](https://typo3.org/security/advisory/typo3-core-sa-2026-017)",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "typo3/cms-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "14.0.0"
}, {
"fixed" : "14.3.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "typo3/cms-form"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "14.0.0"
}, {
"fixed" : "14.3.3"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/TYPO3/typo3/security/advisories/GHSA-jh32-v29g-68pq"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-49741"
}, {
"type" : "WEB",
"url" : "https://github.com/TYPO3/typo3/commit/c90493c13b633f328cf2c066182c90a1655ff0fc"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49741.yaml"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/TYPO3/typo3"
}, {
"type" : "WEB",
"url" : "https://typo3.org/security/advisory/typo3-core-sa-2018-003"
}, {
"type" : "WEB",
"url" : "https://typo3.org/security/advisory/typo3-core-sa-2026-017"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862", "CWE-89" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-06-12T19:32:22Z",
"nvd_published_at" : "2026-06-09T11:16:53Z"
}
}