CVE-2026-55824
CVE-2026-55824 · Contao crawler leaks auth credentials to external hosts
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Contao is an Open Source CMS. In versions 4.13.40 through 5.3.46 and 5.7.0-RC1 through 5.7.6, the crawler leaks auth credentials to external hosts. Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes Cookie and Authorization headers, but it removes the non-Symfony option names basic_auth and bearer_auth instead of Symfony HttpClient's real auth_basic and auth_bearer options. When contao.crawl.default_http_client_options contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the "clean" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials. This issue has been fixed in versions 5.3.47 and 5.7.7.
CVSS 2.6 · Baja · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: php
Productos y versiones afectados
contao
- Versiones
- >= 4.13.40, < 5.3.47: Afectada
- >= 5.7.0-RC1, < 5.7.7: Afectada
Sin corrección publicada
contao/contao Packagist
- Versiones
- 4.13.0
- 4.13.1
- 4.13.10
- 4.13.11
- 4.13.12
- 4.13.13
- 4.13.14
- 4.13.15
- 4.13.16
- 4.13.17
- 4.13.18
- 4.13.19
- 4.13.2
- 4.13.20
- 4.13.21
- 4.13.22
- 4.13.23
- 4.13.24
- 4.13.25
- 4.13.26
- 4.13.27
- 4.13.28
- 4.13.29
- 4.13.3
- 4.13.30
- 4.13.31
- 4.13.32
- 4.13.33
- 4.13.34
- 4.13.35
- 4.13.36
- 4.13.37
- 4.13.38
- 4.13.39
- 4.13.4
- 4.13.40
- 4.13.41
- 4.13.42
- 4.13.43
- 4.13.44
- 4.13.45
- 4.13.46
- 4.13.47
- 4.13.48
- 4.13.49
- 4.13.5
- 4.13.50
- 4.13.51
- 4.13.52
- 4.13.53
- 4.13.54
- 4.13.55
- 4.13.56
- 4.13.57
- 4.13.58
- 4.13.6
- 4.13.7
- 4.13.8
- 4.13.9
- 5.0.0
- 5.0.0-RC1
- 5.0.0-RC2
- 5.0.0-RC3
- 5.0.0-RC4
- 5.0.1
- 5.0.10
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.0.6
- 5.0.7
- 5.0.8
- 5.0.9
- 5.1.0
- 5.1.0-RC1
- 5.1.0-RC2
- 5.1.0-RC3
- 5.1.1
- 5.1.10
- 5.1.11
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
- 5.1.7
- 5.1.8
- 5.1.9
- 5.2.0
- 5.2.0-RC1
- 5.2.0-RC2
- 5.2.0-RC3
- 5.2.0-RC4
- 5.2.0-RC5
- 5.2.0-RC6
- 5.2.1
- 5.2.10
- 5.2.2
- 5.2.3
- 5.2.4
- 5.2.5
- 5.2.6
- 5.2.7
- 5.2.8
- 5.2.9
- 5.3.0
- 5.3.0-RC1
- 5.3.0-RC2
- 5.3.0-RC3
- 5.3.0-RC4
- 5.3.1
- 5.3.10
- 5.3.11
- 5.3.12
- 5.3.13
- 5.3.14
- 5.3.15
- 5.3.16
- 5.3.17
- 5.3.18
- 5.3.19
- 5.3.2
- 5.3.20
- 5.3.21
- 5.3.22
- 5.3.23
- 5.3.24
- 5.3.25
- 5.3.26
- 5.3.27
- 5.3.28
- 5.3.29
- 5.3.3
- 5.3.30
- 5.3.31
- 5.3.32
- 5.3.33
- 5.3.34
- 5.3.35
- 5.3.36
- 5.3.37
- 5.3.38
- 5.3.39
- 5.3.4
- 5.3.40
- 5.3.41
- 5.3.42
- 5.3.43
- 5.3.44
- 5.3.45
- 5.3.46
- 5.3.5
- 5.3.6
- 5.3.7
- 5.3.8
- 5.3.9
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 4.13.0, < 5.3.47
Actualiza a 5.3.47
contao/contao Packagist
- Versiones
- 5.4.0
- 5.4.1
- 5.4.10
- 5.4.11
- 5.4.12
- 5.4.13
- 5.4.14
- 5.4.2
- 5.4.3
- 5.4.4
- 5.4.5
- 5.4.6
- 5.4.7
- 5.4.8
- 5.4.9
- 5.5.0
- 5.5.0-RC1
- 5.5.0-RC2
- 5.5.0-RC3
- 5.5.0-RC4
- 5.5.1
- 5.5.10
- 5.5.11
- 5.5.12
- 5.5.13
- 5.5.14
- 5.5.15
- 5.5.16
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.7
- 5.5.8
- 5.5.9
- 5.6.0
- 5.6.0-RC1
- 5.6.0-RC2
- 5.6.0-RC3
- 5.6.1
- 5.6.10
- 5.6.11
- 5.6.2
- 5.6.3
- 5.6.4
- 5.6.5
- 5.6.6
- 5.6.7
- 5.6.8
- 5.6.9
- 5.7.0
- 5.7.0-RC1
- 5.7.0-RC2
- 5.7.0-RC3
- 5.7.0-RC4
- 5.7.1
- 5.7.2
- 5.7.3
- 5.7.4
- 5.7.5
- 5.7.6
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 5.4.0, < 5.7.7
Actualiza a 5.7.7
contao/core-bundle Packagist
- Versiones
- 4.13.0
- 4.13.1
- 4.13.10
- 4.13.11
- 4.13.12
- 4.13.13
- 4.13.14
- 4.13.15
- 4.13.16
- 4.13.17
- 4.13.18
- 4.13.19
- 4.13.2
- 4.13.20
- 4.13.21
- 4.13.22
- 4.13.23
- 4.13.24
- 4.13.25
- 4.13.26
- 4.13.27
- 4.13.28
- 4.13.29
- 4.13.3
- 4.13.30
- 4.13.31
- 4.13.32
- 4.13.33
- 4.13.34
- 4.13.35
- 4.13.36
- 4.13.37
- 4.13.38
- 4.13.39
- 4.13.4
- 4.13.40
- 4.13.41
- 4.13.42
- 4.13.43
- 4.13.44
- 4.13.45
- 4.13.46
- 4.13.47
- 4.13.48
- 4.13.49
- 4.13.5
- 4.13.50
- 4.13.51
- 4.13.52
- 4.13.53
- 4.13.54
- 4.13.55
- 4.13.56
- 4.13.57
- 4.13.58
- 4.13.6
- 4.13.7
- 4.13.8
- 4.13.9
- 5.0.0
- 5.0.0-RC1
- 5.0.0-RC2
- 5.0.0-RC3
- 5.0.0-RC4
- 5.0.1
- 5.0.10
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.0.6
- 5.0.7
- 5.0.8
- 5.0.9
- 5.1.0
- 5.1.0-RC1
- 5.1.0-RC2
- 5.1.0-RC3
- 5.1.1
- 5.1.10
- 5.1.11
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
- 5.1.7
- 5.1.8
- 5.1.9
- 5.2.0
- 5.2.0-RC1
- 5.2.0-RC2
- 5.2.0-RC3
- 5.2.0-RC4
- 5.2.0-RC5
- 5.2.0-RC6
- 5.2.1
- 5.2.10
- 5.2.2
- 5.2.3
- 5.2.4
- 5.2.5
- 5.2.6
- 5.2.7
- 5.2.8
- 5.2.9
- 5.3.0
- 5.3.0-RC1
- 5.3.0-RC2
- 5.3.0-RC3
- 5.3.0-RC4
- 5.3.1
- 5.3.10
- 5.3.11
- 5.3.12
- 5.3.13
- 5.3.14
- 5.3.15
- 5.3.16
- 5.3.17
- 5.3.18
- 5.3.19
- 5.3.2
- 5.3.20
- 5.3.21
- 5.3.22
- 5.3.23
- 5.3.24
- 5.3.25
- 5.3.26
- 5.3.27
- 5.3.28
- 5.3.29
- 5.3.3
- 5.3.30
- 5.3.31
- 5.3.32
- 5.3.33
- 5.3.34
- 5.3.35
- 5.3.36
- 5.3.37
- 5.3.38
- 5.3.39
- 5.3.4
- 5.3.40
- 5.3.41
- 5.3.42
- 5.3.43
- 5.3.44
- 5.3.45
- 5.3.46
- 5.3.5
- 5.3.6
- 5.3.7
- 5.3.8
- 5.3.9
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 4.13.0, < 5.3.47
Actualiza a 5.3.47
contao/core-bundle Packagist
- Versiones
- 5.4.0
- 5.4.1
- 5.4.10
- 5.4.11
- 5.4.12
- 5.4.13
- 5.4.14
- 5.4.2
- 5.4.3
- 5.4.4
- 5.4.5
- 5.4.6
- 5.4.7
- 5.4.8
- 5.4.9
- 5.5.0
- 5.5.0-RC1
- 5.5.0-RC2
- 5.5.0-RC3
- 5.5.0-RC4
- 5.5.1
- 5.5.10
- 5.5.11
- 5.5.12
- 5.5.13
- 5.5.14
- 5.5.15
- 5.5.16
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.7
- 5.5.8
- 5.5.9
- 5.6.0
- 5.6.0-RC1
- 5.6.0-RC2
- 5.6.0-RC3
- 5.6.1
- 5.6.10
- 5.6.11
- 5.6.2
- 5.6.3
- 5.6.4
- 5.6.5
- 5.6.6
- 5.6.7
- 5.6.8
- 5.6.9
- 5.7.0
- 5.7.0-RC1
- 5.7.0-RC2
- 5.7.0-RC3
- 5.7.0-RC4
- 5.7.1
- 5.7.2
- 5.7.3
- 5.7.4
- 5.7.5
- 5.7.6
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 5.4.0, < 5.7.7
Actualiza a 5.7.7