High 2026-07-21

Webkit2gtk3 Security Update — AlmaLinux 8 (ALSA-2026:42088)

AlmaLinux 8

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fix(es): * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367) * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-39872) * webkitgtk: webkitgtk: …

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

* Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)
* webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-39872)
* webkitgtk: webkitgtk: …

Type:

security

Severity:

important

Release date:

2026-07-21

Description:

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.  
Security Fix(es):  
  * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-39872)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43663)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43676)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43699)

  * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43701)

  * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43707)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43712)

  * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

  * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43716)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43720)

  * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

  * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox (CVE-2026-43725)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43726)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43727)

  * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

  * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information (CVE-2026-43732)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43734)

  * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43742)

  * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash (CVE-2026-43745)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References:

Updated packages listed below:

Architecture	Package	Checksum
aarch64	webkit2gtk3-jsc-2.52.5-1.el8_10.aarch64.rpm	769f6035a41adeaaa28d1f671159e40540deb2c32c046efda63a8072d6e49832
aarch64	webkit2gtk3-devel-2.52.5-1.el8_10.aarch64.rpm	941a49bdb2fe2fb6812ab082480269babaab40425e356a4a029eef34aab3750f
aarch64	webkit2gtk3-jsc-devel-2.52.5-1.el8_10.aarch64.rpm	9c53c702a6916edd1f5f4bbd75de2f50e978e9cf4bf2296340f3645e8bceca35
aarch64	webkit2gtk3-2.52.5-1.el8_10.aarch64.rpm	d26b58621c9982464167a1c10e5ad185888f860dcec9aef89a7c0d3aa4217df1
i686	webkit2gtk3-2.52.5-1.el8_10.i686.rpm	12750db19e9534120a9f5aa57ca0947fdbaeef8bc02b0f1265f57e0d7013f423
i686	webkit2gtk3-jsc-devel-2.52.5-1.el8_10.i686.rpm	2efe968e0106abf1a5e6162face17c431497261e4dfc3be6d7863594f0a39534
i686	webkit2gtk3-devel-2.52.5-1.el8_10.i686.rpm	ad87015ee13d8678dc4de675c189626d0e5cb2a84f848968d74778d8623b6b77
i686	webkit2gtk3-jsc-2.52.5-1.el8_10.i686.rpm	e11af47a46c9bb9f98215409307d620a28ae825580c490cdc4a5eacd7de41f10
ppc64le	webkit2gtk3-jsc-2.52.5-1.el8_10.ppc64le.rpm	1a3c565cdc71a112e52cd42422d5a4feae73c6f12166384570e96911ab24966f
ppc64le	webkit2gtk3-devel-2.52.5-1.el8_10.ppc64le.rpm	1d309beeaaaa57eb6d52bb4cd696e253b15a9699c60966f85752b8e9287871d7
ppc64le	webkit2gtk3-2.52.5-1.el8_10.ppc64le.rpm	d4c1207596c6bab882e24d7f38d076fc3e7826ca102f7fbcaecc8ca0a3b2ad08
ppc64le	webkit2gtk3-jsc-devel-2.52.5-1.el8_10.ppc64le.rpm	d549ba69e5337bf5cee4a6ef1ac800b076f456a28f0a31c7d8d72f412012fbcc
s390x	webkit2gtk3-devel-2.52.5-1.el8_10.s390x.rpm	10448eb7426680e1aca923aad1fb9614898ce680225d593f060e33401dcca439
s390x	webkit2gtk3-2.52.5-1.el8_10.s390x.rpm	2f0cad9af03d872f991950606c7b5e97fe266236702768205a6c8ed2545527c1
s390x	webkit2gtk3-jsc-devel-2.52.5-1.el8_10.s390x.rpm	b10124c34c01ed2d8f7db371fcb581eb0738e339b798d9c2b899fc8a3b24f9eb
s390x	webkit2gtk3-jsc-2.52.5-1.el8_10.s390x.rpm	f1d8e0f116cf04080dd2189a5386483e52d8db8f5e30217a702d55d435c3a58b
x86_64	webkit2gtk3-jsc-2.52.5-1.el8_10.x86_64.rpm	16991a6761b6826594b2dfc34e2603398abc0990b8775f44cfec8590a42e9bcc
x86_64	webkit2gtk3-devel-2.52.5-1.el8_10.x86_64.rpm	4cd5c269cce99678f3cdba9f375ad0b8870110fff4c78705605c6e26b595d290
x86_64	webkit2gtk3-2.52.5-1.el8_10.x86_64.rpm	8502a60d7ca8ebb895cb8e36f63284c2610ad4d42f3463f3d21111b8704ecbce
x86_64	webkit2gtk3-jsc-devel-2.52.5-1.el8_10.x86_64.rpm	98e0f10a17edfa3ef04886e2d2e6fe0a6816ca5236386470549ce6e3a3058a9b

Notes:

This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.

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