ESB-2026.3508 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3508 webkit2gtk security update 13 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: webkit2gtk Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2025-43214 CVE-2025-43457 CVE-2025-43511 CVE-2026-20652 CVE-2026-20608 CVE-2026-20676 CVE-2026-20644 CVE-2026-20636 CVE-2026-20635 Original Bulletin: https://lists.debian.org/debian-lts-announce/2026/04/msg00007.html Comment: CVSS (Max): 7.5 CVE-2026-20652 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: [NIST], CISA-ADP Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.2% (37th) CVE-2026-20652 2026-04-12 - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4528-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Emilio Pozuelo Monfort April 11, 2026 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : webkit2gtk Version : 2.50.6-1~deb11u1 CVE ID : CVE-2025-43214 CVE-2025-43457 CVE-2025-43511 CVE-2026-20608 CVE-2026-20635 CVE-2026-20636 CVE-2026-20644 CVE-2026-20652 CVE-2026-20676 The following vulnerabilities have been discovered in the WebKitGTK web engine: CVE-2025-43214 shandikri discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2025-43457 Gary Kwong and Hossein Lotfi discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2025-43511 Lee Dong Ha discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2026-20608 HanQing and Nan Wang discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2026-20635 EntryHi discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2026-20636 EntryHi discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2026-20644 HanQing and Nan Wang discovered that processing maliciously crafted web content may lead to an unexpected process crash. CVE-2026-20652 Nathaniel Oh discovered that a remote attacker may be able to cause a denial-of-service. CVE-2026-20676 Tom Van Goethem discovered that a website may be able to track users through web extensions. For Debian 11 bullseye, these problems have been fixed in version 2.50.6-1~deb11u1. We recommend that you upgrade your webkit2gtk packages. For the detailed security status of webkit2gtk please refer to its security tracker page at: https://security-tracker.debian.org/tracker/webkit2gtk Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Debianwebkit2gtk

Timeline

References

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