CVE-2026-48616: Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerab

Q: How urgent is CVE-2026-48616?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.3REMOTEUPGRADE

CVE-2026-48616 is a critical-severity flaw (CVSS 9.3) affecting rocket.chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rc_room_type=l with rc_rid+rc_token, but the authorization path does not verify that rc_rid matches the requested file's rid. Furthermore, :fileId is predictable via sequential MongoDB IDs, and :name can be anything, allowing un

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-06-17
Last modified	2026-10-24

Publisher (CNA): HackerOne · Vendor: rocket.chat

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-17 13:20 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

rocket.chat rocket.chat UPGRADE

Affected: < 7.10.13 · >= 7.13.0 and < 7.13.9 · >= 8.0.0 and < 8.0.7 · >= 8.1.0 and < 8.1.6 · >= 8.2.0 and < 8.2.6 · >= 8.3.0 and < 8.3.6 · >= 8.4.0 and < 8.4.4 · >= 8.5.0 and < 8.5.1

Fixed in: 7.10.13, 7.13.9, 8.0.7, 8.1.6, 8.2.6, 8.3.6, 8.4.4, 8.5.1

Safe to downgrade to: a release before 7.13.0

1. Check installed version

apt-cache policy rocket.chat || rpm -q rocket.chat || rocket.chat --version

2. UPGRADE to 7.10.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rocket.chat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rocket.chat

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 7.13.0 (Debian / Ubuntu)

apt-cache madison rocket.chat sudo apt install rocket.chat=<VERSION_BEFORE_7.13.0> sudo apt-mark hold rocket.chat

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list rocket.chat sudo dnf downgrade rocket.chat-<VERSION_BEFORE_7.13.0> sudo dnf versionlock add rocket.chat

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source

sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48616?

rocket.chat: upgrade to 7.10.13, 7.13.9, 8.0.7, 8.1.6, 8.2.6, 8.3.6, 8.4.4, 8.5.1. Exact commands for each OS are on this page.

Is CVE-2026-48616 being exploited?

CVE-2026-48616 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48616 affect?

CVE-2026-48616 affects rocket.chat. Severity is critical (CVSS 9.3). Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rc_room_type=l wit

How urgent is CVE-2026-48616?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

MongoDB vulnerabilities

Related CVEs

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CVE-2026-29197 MEDIUM 4.3 UPGRADE In versions <8.4.0, <8.3.2, <8.2.2, <8.1.3, <8.0.4, <7.13.6, <7.12.7, <7.11.7, and <7.10.10, the endpoints /ap
CVE-2026-29198 CRITICAL 9.8 UPGRADE In Rocket.Chat <8.3.0, <8.2.1, <8.1.2, <8.0.3, <7.13.5, <7.12.6, <7.11.6, and <7.10.9, a NoSQL injection vulne

References

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