CVE-2022-40958

high

Published 2022-09-26 · Modified 2022-09-26

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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

By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

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

AlmaLinux Fixed 1 release

Version	Status	Fixed in
8	Fixed	`thunderbird-102.3.0-3.el8_6.alma.x86_64.rpm`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`102.3.0esr-1`
sid	Fixed	`105.0-1`
forky	Fixed	`102.3.0esr-1`
bullseye	Fixed	`102.3.0esr-1~deb11u1`
bookworm	Fixed	`102.3.0esr-1`

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

References

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

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