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Some sources, documents or advisories need attention: 275/275 feeds/APIs · 469/469 docs · 7/9 advisories · checked 00:29 UTC Customize Public modeDiscuss ChangeIntel on Discord
EUVD-2026-30749Published

Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recip…

Exact source revision recorded 30 Oct 2026 10:55:55 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

Immutable source observations

2 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

30 Oct 2026 10:55:55 UTC

Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recip…

euvd · EUVD-2026-30749 · Published

28 Oct 2026 08:41:41 UTC

Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recip…

euvd · EUVD-2026-30749 · Published

This citation shows only its exact record and strictly earlier observation times. Open complete latest history.

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 10 Nov 00:29 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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