CVE-2018-5478 json
Contao Cross-site Scripting vulnerabililty
published 2023-09-21 3 y ago modified 2026-06-17 4 mo ago also GHSA-mpg7-2rx9-h5qp , EUVD-2023-2550
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | contao/core | >=3.0.0, <3.5.32 |
3.5.32 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/contao/core/commit/3123d6527ae6c46087b0ad8061eb8651cb645b8d
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/contao/core/CVE-2018-5478.yaml
web, third-party-advisory
-
security.snyk.io
/vuln/SNYK-PHP-CONTAOCORE-70397
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-5478
advisory
-
contao.org
/en/news/contao-3_5_32.html
web
-
github.com
/contao/core
package
Sources
- CVE List CVE-2018-5478
- GitHub Advisory GHSA-mpg7-2rx9-h5qp
- NVD CVE-2018-5478
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.