CVE-2026-20635
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
Description webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash Red Hat statement To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity. Additionally, this issue can cause an unexpected process crash but the possibility of remote…
Description
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
Red Hat statement
To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity. Additionally, this issue can cause an unexpected process crash but the possibility of remote code execution is not discarded.
CVSS v3: 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Errata / fixed releases
| Product | Package | Advisory | Released |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | webkit2gtk3-0:2.52.3-1.el8_10 | RHSA-2026:10702 | 2026-04-27T00:00:00Z |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | webkit2gtk3-0:2.52.3-1.el8_4 | RHSA-2026:16056 | 2026-05-11T00:00:00Z |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | webkit2gtk3-0:2.52.3-1.el8_4 | RHSA-2026:16056 | 2026-05-11T00:00:00Z |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | webkit2gtk3-0:2.52.3-1.el8_6 | RHSA-2026:13845 | 2026-05-05T00:00:00Z |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | webkit2gtk3-0:2.52.3-1.el8_6 | RHSA-2026:13845 | 2026-05-05T00:00:00Z |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | webkit2gtk3-0:2.52.3-1.el8_6 | RHSA-2026:13845 | 2026-05-05T00:00:00Z |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | webkit2gtk3-0:2.52.3-1.el8_8 | RHSA-2026:11814 | 2026-04-29T00:00:00Z |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | webkit2gtk3-0:2.52.3-1.el8_8 | RHSA-2026:11814 | 2026-04-29T00:00:00Z |
| Red Hat Enterprise Linux 9 | webkit2gtk3-0:2.52.3-1.el9_8 | RHSA-2026:19206 | 2026-05-19T00:00:00Z |
| Red Hat Enterprise Linux 9 | webkit2gtk3-0:2.52.3-0.el9_7.1 | RHSA-2026:9692 | 2026-04-22T00:00:00Z |
| Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | webkit2gtk3-0:2.52.3-1.el9_0 | RHSA-2026:19535 | 2026-05-20T00:00:00Z |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | webkit2gtk3-0:2.52.3-1.el9_2 | RHSA-2026:16695 | 2026-05-13T00:00:00Z |
| Red Hat Enterprise Linux 9.4 Extended Update Support | webkit2gtk3-0:2.52.3-1.el9_4 | RHSA-2026:14659 | 2026-05-07T00:00:00Z |
| Red Hat Enterprise Linux 9.6 Extended Update Support | webkit2gtk3-0:2.52.3-1.el9_6 | RHSA-2026:11329 | 2026-04-28T00:00:00Z |
Package state
| Product | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | webkitgtk | Out of support scope |
| Red Hat Enterprise Linux 7 | webkitgtk3 | Not affected |
| Red Hat Enterprise Linux 7 | webkitgtk4 | Affected |
Apply commands
yum update -y webkit2gtk3
# or:
dnf upgrade -y webkit2gtk3Affected
| Vendor | Product | Version |
|---|---|---|
| redhat | Red Hat Enterprise Linux 7 | Not affected |
| redhat | Red Hat Enterprise Linux 7 | Affected |
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.50.6-1~deb13u1 |
| sid | Fixed | 2.50.6-1 |
| forky | Fixed | 2.50.6-1 |
| bullseye | Fixed | 2.50.6-1~deb11u1 |
| bookworm | Fixed | 2.50.6-1~deb12u1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
References
- https://access.redhat.com/errata/RHSA-2026:19206
- https://access.redhat.com/errata/RHSA-2026:9692
- https://www.suse.com/security/cve/CVE-2026-20635.html
- https://security-tracker.debian.org/tracker/CVE-2026-20635
- https://access.redhat.com/errata/RHSA-2026:10702
- https://bugzilla.redhat.com/2448781
- https://bugzilla.redhat.com/2448782
- https://bugzilla.redhat.com/2448786
- https://bugzilla.redhat.com/2448787
- https://bugzilla.redhat.com/2448788
- https://bugzilla.redhat.com/2448789
- https://bugzilla.redhat.com/2448790
- https://bugzilla.redhat.com/2448791
- https://bugzilla.redhat.com/2448792
- https://bugzilla.redhat.com/2448793
- https://bugzilla.redhat.com/2448794
- https://bugzilla.redhat.com/2453000
- https://bugzilla.redhat.com/2453001
- https://bugzilla.redhat.com/2453002
- https://bugzilla.redhat.com/2453003
- https://bugzilla.redhat.com/2453004
- https://bugzilla.redhat.com/2453006
- https://bugzilla.redhat.com/2453008
- https://errata.almalinux.org/8/ALSA-2026-10702.html
- https://errata.almalinux.org/9/ALSA-2026-19206.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.