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Fedora 43 libsoup3 Critical Information Disclosure CVE-2026

Linuxsecurity •LinuxSecurity Advisories • June 4, 2026

* Tue May 19 2026 Luigi Pavan - 3.6.6-3 - Fix CVE-2026-5119: cookies sent in cleartext to HTTP proxy for HTTPS requests

[ 1 ] Bug #2452935 - CVE-2026-5119 libsoup3: libsoup: Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment [fedora-all]

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-37298d3095' at the command line. For more information, refer to the dnf documentation available at

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Vulnerabilities in Fedora 43: Information Disclosure and Header Smuggling Fedora 43 has reported two critical vulnerabilities affecting libsoup3 and perl-HTTP-Tiny. CVE-2026-5119, published on March 30, 2026, allows information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment. This vulnerability impacts users of libsoup3 in Fedora 43. CVE-2026-7010, published on May 11, 2026, addresses a header smuggling issue in perl-HTTP-Tiny, which can introduce security risks by allowing invalid characters in headers. Both vulnerabilities can be mitigated by applying the latest updates available through the dnf update program. Users are urged to upgrade to the patched versions to secure their systems against potential exploitation. 95 sources 58

Extracted Entities

Fedora 43 libsoup3 Critical Information Disclosure CVE-2026

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Extracted Entities

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Platforms (1)