CVE-2025-46421

NameCVE-2025-46421
DescriptionA flaw was found in libsoup. When libsoup clients encounter an HTTP redirect, they mistakenly send the HTTP Authorization header to the new host that the redirection points to. This allows the new host to impersonate the user to the original host that issued the redirect.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1104054

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libsoup2.4 (PTS)bullseye2.72.0-2vulnerable
bullseye (security)2.72.0-2+deb11u1vulnerable
bookworm2.74.3-1+deb12u1vulnerable
sid, trixie2.74.3-10vulnerable
libsoup3 (PTS)bookworm3.2.2-2vulnerable
sid, trixie3.6.5-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libsoup2.4source(unstable)(unfixed)1104054
libsoup3source(unstable)3.6.5-1

Notes

https://gitlab.gnome.org/GNOME/libsoup/-/issues/439
https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/436
Fixed by: https://gitlab.gnome.org/GNOME/libsoup/-/commit/3e5c26415811f19e7737238bb23305ffaf96f66b (3.6.5)

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