PT-2026-25895 · Libsoup · Libsoup

Fouzhe · Publicado 2026-01-01 · Atualizado 2026-06-09 · CVE-2026-4271

Positive Technologies (AI Summary)

CVSS v2.0

7.8

Alta

Vetor base

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libsoup (affected versions not specified)

Description A Use-After-Free flaw exists in the libsoup library, specifically within the HTTP/2 server implementation. A remote attacker can exploit this by sending crafted HTTP/2 requests that trigger authentication failures. This can lead to the application attempting to access freed memory, potentially causing application instability, crashes, and a Denial of Service (DoS). The vulnerability affects applications relying on libsoup for handling HTTP requests.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Use After Free

Enumeração de Fraquezas

CWE-416

Identificadores relacionados

ALSA-2026:15968

ALSA-2026:19143

BDU:2026-04362

CVE-2026-4271

ECHO-8792-9C43-A7BA

OPENSUSE-SU-2026:10911-1

RHSA-2026:15968

RHSA-2026:17482

RHSA-2026:19143

SUSE-SU-2026:21998-1

SUSE-SU-2026:2314-1

Produtos afetados

Libsoup

Referências · 40

• 🔥 https://gitlab.gnome.org/GNOME/libsoup/-/issues/496 · Exploit
• https://twitter.com/VulmonFeeds/status/2033886717011226941 · Publicação no Twitter
• https://bugzilla.redhat.com/2448044 · Nota
• https://access.redhat.com/errata/RHSA-2026:15968 · Aviso do Fabricante
• https://t.me/cveNotify/163138 · Publicação no Telegram
• https://twitter.com/CVEarity/status/2033954995037741550 · Publicação no Twitter
• https://suse.com/support/update/announcement/2026/suse-su-20262314-1 · Nota
• https://ubuntu.com/security/CVE-2026-4271 · Aviso do Fabricante
• https://t.me/cveNotify/163424 · Publicação no Telegram
• https://osv.dev/vulnerability/ALSA-2026:15968 · Aviso do Fabricante
• https://access.redhat.com/security/cve/CVE-2026-4271 · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2026-4271 · Aviso do Fabricante
• https://errata.almalinux.org/10/ALSA-2026-19143.html · Aviso do Fabricante
• https://errata.almalinux.org/10/ALSA-2026-15968.html · Aviso do Fabricante
• https://bugzilla.suse.com/1257649 · Nota