CVE-2026-28859

high

Published 2026-05-19 · Modified 2026-04-27

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

8.0

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.52.3-2~deb13u1`
sid	Fixed	`2.52.1-1`
forky	Fixed	`2.52.1-1`
bullseye	Affected	—
bookworm	Affected	—

apple Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

ios Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

macOS Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
9	Fixed	—

safari Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

tvos Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

watchos Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.