Description
Impact
It is possible to inject insert tags via the form generator if the submitted form data is output on the page in a specific way.
Patches
Update to Contao 4.13.40 or 5.3.4.
Workarounds
Do not output the submitted form data on the website.
References
https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator
For more information
If you have any questions or comments about this advisory, open an issue in contao/contao.
Basic information
- Type
- reviewed
- Severity
- low
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- Open repository advisory ↗
- Source code
- Browse source ↗
- Published (advisory)
- 2024-04-09 18:52:51 UTC
- Updated
- 2024-04-09 18:52:57 UTC
- GitHub reviewed
- 2024-04-09 18:52:51 UTC
- NVD published
- 2024-04-09
EPSS Score
| Score |
Percentile |
|
0.96%
|
76.52% |
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
3.1
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Click to expand
- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:H)
- Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
- Privileges required (PR:L)
- A normal user session is enough; they don’t have to be admin.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:L)
- Some sensitive info could get out, but not a total data dump.
- Integrity (I:N)
- Data isn’t meaningfully altered or forged.
- Availability (A:N)
- Service keeps running; no real outage angle.
|
CWEs
| CWE id |
Name |
|
CWE-74
|
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') |
Affected packages (2)
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem |
Package |
Vulnerable range |
First patched |
Vulnerable functions |
| composer |
contao/core-bundle |
>= 4.0.0, < 4.13.40 |
4.13.40 |
—
|
| composer |
contao/core-bundle |
>= 5.0.0-RC1, < 5.3.4 |
5.3.4 |
—
|
cvelogic
Threat Intelligence