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CVE-2026-45064: Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing

medium Affects symfony/html-sanitizer, symfony/symfony. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing

Package
symfony/html-sanitizer Composer
Affected versions
>=6.1.0 and <6.4.40 or >=7.0.0 and <7.4.12 or >=8.0.0 and <8.0.12 or >=6.1.0 and <6.2.0 or >=6.2.0 and <6.3.0 or >=6.3.0 and <6.4.0 or >=6.4.0 and <6.4.40 or >=7.0.0 and <7.1.0 or >=7.1.0 and <7.2.0 or >=7.2.0 and <7.3.0 or >=7.3.0 and <7.4.0 or >=7.4.0 and <7.4.12
Fixed in
6.4.40, 7.4.12, 8.0.12
Severity
medium
Exploitation
not on CISA KEV · EPSS 0% (27.1th percentile)
Published
2026-05-27
Source
osv.dev

References

Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing

Package
symfony/symfony Composer
Affected versions
>=6.1.0 and <6.4.40 or >=7.0.0 and <7.4.12 or >=8.0.0 and <8.0.12 or >=6.1.0 and <6.2.0 or >=6.2.0 and <6.3.0 or >=6.3.0 and <6.4.0 or >=6.4.0 and <6.4.40 or >=7.0.0 and <7.1.0 or >=7.1.0 and <7.2.0 or >=7.2.0 and <7.3.0 or >=7.3.0 and <7.4.0 or >=7.4.0 and <7.4.12
Fixed in
6.4.40, 7.4.12, 8.0.12
Severity
medium
Exploitation
not on CISA KEV · EPSS 0% (27.1th percentile)
Published
2026-05-27
Source
osv.dev

References

CWE-1007CWE-451
NVD recordsymfony/html-sanitizer advisoriessymfony/symfony advisories

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