CVE-2026-5734

high

Published 2026-04-13 · Modified 2026-04-17

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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

Important: firefox security update

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

OS	Version	Status	Fixed in
rhel	9	fixed
almalinux	9	fixed	`firefox-140.9.1-1.el9_7.alma.1.x86_64.rpm`
debian	sid	fixed	`149.0.2-1`
debian	bookworm	fixed	`140.9.1esr-1~deb12u1`
debian	bullseye	fixed	`140.9.1esr-1~deb11u1`
debian	forky	fixed	`140.9.1esr-1`
debian	trixie	fixed	`140.9.1esr-1~deb13u1`
sles		affected
rocky	9	fixed

References

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

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