CVE-2026-2777
high
CVSS v3
—
CVSS v4 NEW
—
VIR risk
8.0
Description
RHSA-2026:3515: thunderbird security update (Important)
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 withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rocky | 8 | fixed | |
| rhel | 9 | fixed | |
| debian | sid | fixed | 148.0-1 |
| debian | bookworm | fixed | 140.8.0esr-1~deb12u1 |
| debian | bullseye | fixed | 140.8.0esr-1~deb11u1 |
| debian | forky | fixed | 140.8.0esr-1 |
| debian | trixie | fixed | 140.8.0esr-1~deb13u1 |
| sles | affected | | |
| rocky | 9 | fixed | |
| almalinux | 8 | fixed | firefox-140.8.0-2.el8_10.alma.1.x86_64.rpm |
| almalinux | 9 | fixed | firefox-x11-140.8.0-2.el9_7.alma.1.x86_64.rpm |
| rhel | 8 | fixed | |
References
- https://errata.rockylinux.org/RLSA-2026:3515
- https://errata.rockylinux.org/RLSA-2026:3338
- https://access.redhat.com/errata/RHSA-2026:3339
- https://access.redhat.com/errata/RHSA-2026:3516
- https://security-tracker.debian.org/tracker/CVE-2026-2777
- https://www.suse.com/security/cve/CVE-2026-2777.html
- https://errata.rockylinux.org/RLSA-2026:3516
- https://errata.rockylinux.org/RLSA-2026:3339
- https://access.redhat.com/errata/RHSA-2026:3338
- https://bugzilla.redhat.com/2440219
- https://bugzilla.redhat.com/2442284
- https://bugzilla.redhat.com/2442287
- https://bugzilla.redhat.com/2442288
- https://bugzilla.redhat.com/2442290
- https://bugzilla.redhat.com/2442291
- https://bugzilla.redhat.com/2442292
- https://bugzilla.redhat.com/2442294
- https://bugzilla.redhat.com/2442295
- https://bugzilla.redhat.com/2442297
- https://bugzilla.redhat.com/2442298
- https://bugzilla.redhat.com/2442300
- https://bugzilla.redhat.com/2442302
- https://bugzilla.redhat.com/2442304
- https://bugzilla.redhat.com/2442307
- https://bugzilla.redhat.com/2442308
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.