CVE-2026-48760

NameCVE-2026-48760
DescriptionSymfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlSanitizer::parse() rejected raw BiDi formatting characters but not percent-encoded forms and used an ASCII-only whitespace check, allowing sanitized URLs to retain visual-spoofing characters that downstream consumers could decode or display. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6312-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
symfony (PTS)bullseye4.4.19+dfsg-2+deb11u6fixed
bullseye (security)4.4.19+dfsg-2+deb11u7fixed
bookworm, bookworm (security)5.4.53+dfsg-0+deb12u1fixed
trixie (security), trixie6.4.41+dfsg-0+deb13u1fixed
forky, sid7.4.14+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
symfonysourcebullseye(not affected)
symfonysourcebookworm(not affected)
symfonysourcetrixie6.4.41+dfsg-0+deb13u1DSA-6312-1
symfonysource(unstable)7.4.13+dfsg-1

Notes

[bookworm] - symfony <not-affected> (Vulnerable code not present)
[bullseye] - symfony <not-affected> (Vulnerable code not present)
https://symfony.com/blog/cve-2026-48760-htmlsanitizer-url-parser-underinclusive-percent-encoded-bidi-marks-and-unicode-whitespace-bypass
https://github.com/symfony/symfony/commit/b21a626fd90f5c12d2db432c629eed3e780ba2f8 (v6.4.41)

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