CVE-2021-30952

webkit2gtk3: ELSA-2022-1777: webkit2gtk3 security, bug fix, and enhancement update (MODERATE)

CVE-2021-30952 is fixed in 11 products on 1 platform, first by gir1.2-javascriptcoregtk-4.0 2.34.4-0ubuntu0.20.04.1, released March 18, 2022. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 5, 2026. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

8.8

MODERATE

Exploitation

Exploited

Listed by CISA

CISA KEV

Mar 5, 2026

Federal due date Mar 26, 2026

EPSS

0.0696

94th percentile

ELSA-2022-1777: webkit2gtk3 security, bug fix, and enhancement update (MODERATE)

Where it's fixed

Product	Fixed in	Fix	Released
Linux
gir1.2-javascriptcoregtk-4.0 · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	gir1.2-javascriptcoregtk-4.0 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
gir1.2-webkit2-4.0 · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	gir1.2-webkit2-4.0 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
libjavascriptcoregtk-4.0-18 · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	libjavascriptcoregtk-4.0-18 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
libjavascriptcoregtk-4.0-bin · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	libjavascriptcoregtk-4.0-bin 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
libwebkit2gtk-4.0-37 · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	libwebkit2gtk-4.0-37 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
libwebkit2gtk-4.0-37-gtk2 · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	libwebkit2gtk-4.0-37-gtk2 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
webkit2gtk-driver · Ubuntu 20.04 LTS (focal)	2.34.4-0ubuntu0.20.04.1	webkit2gtk-driver 2.34.4-0ubuntu0.20.04.1	Mar 18, 2022
webkit2gtk3 · RHEL 8	0:2.34.6-1.el8	RHSA-2022:1777	May 10, 2022
webkit2gtk3 · almalinux 8	2.34.6-1.el8	ALSA-2022:1777	May 10, 2022
webkit2gtk3 · ol 8	0:2.34.6-1.el8	ELSA-2022-1777	May 17, 2022
webkit2gtk3 · rocky 8	0:2.34.6-1.el8	RLSA-2022:1777	May 10, 2022
webkit2gtk3-devel · RHEL 8	0:2.34.6-1.el8	RHSA-2022:1777	May 10, 2022
webkit2gtk3-devel · almalinux 8	2.34.6-1.el8	ALSA-2022:1777	May 10, 2022
webkit2gtk3-devel · ol 8	0:2.34.6-1.el8	ELSA-2022-1777	May 17, 2022
webkit2gtk3-jsc · RHEL 8	0:2.34.6-1.el8	RHSA-2022:1777	May 10, 2022
webkit2gtk3-jsc · almalinux 8	2.34.6-1.el8	ALSA-2022:1777	May 10, 2022
webkit2gtk3-jsc · ol 8	0:2.34.6-1.el8	ELSA-2022-1777	May 17, 2022
webkit2gtk3-jsc-devel · RHEL 8	0:2.34.6-1.el8	RHSA-2022:1777	May 10, 2022
webkit2gtk3-jsc-devel · almalinux 8	2.34.6-1.el8	ALSA-2022:1777	May 10, 2022
webkit2gtk3-jsc-devel · ol 8	0:2.34.6-1.el8	ELSA-2022-1777	May 17, 2022

Details

Published
January 25, 2022
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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