CVE-2026-2578

unknown

Published 2026-03-16 · Modified 2026-03-23

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

—

Description

Mattermost fails to preserve the redacted state of burn-on-read posts during deletion in github.com/mattermost/mattermost-server

Predictions

Exploit likelihood

30%

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.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/mattermost/mattermost/server/v8	`<8.0.0-20260127062706-c6b205f0d770`	`8.0.0-20260127062706-c6b205f0d770`
Go	github.com/mattermost/mattermost-server	`<5.3.2-0.20260127062706-c6b205f0d770`	`5.3.2-0.20260127062706-c6b205f0d770`
Go	github.com/mattermost/mattermost-server	`>=10.11.0-rc1,<10.11.11`	`10.11.11`
Go	github.com/mattermost/mattermost-server	`>=11.2.0-rc1,<11.2.3`	`11.2.3`
Go	github.com/mattermost/mattermost-server	`>=11.3.0-rc1,<11.3.1`	`11.3.1`
Go	github.com/mattermost/mattermost-server	`>=11.3.0-rc1+incompatible,<11.3.1+incompatible`	`10.11.11+incompatible`
Go	github.com/mattermost/mattermost-server/v5
Go	github.com/mattermost/mattermost-server/v6

References

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

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