🛡️ CVE-2026-45687

🟠 CVSS 8.5 — High ✅ No Known Exploit CWE-915 NVD
8.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's sendFileMessage DDP method passes the entire attacker-supplied file object into Uploads.updateFileComplete, which merges it directly into a MongoDB $set update via Object.assign. There is no allow-list of writable fields. An attacker can therefore rewrite any column on their own upload record, notably store and the store-specific path fields. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity low, availability none.

Weakness class

CVE-2026-45687 is classified as CWE-915: Improperly Controlled Modification of Object Attributes. A request can set object fields that were never meant to be writable from outside.

Affected software

CVE-2026-45687 is recorded against 1 package.

  • unknown

Timeline and source

Published on 24 June 2026 and last revised on 26 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com

Details

Severity HIGH
CVSS Score 8.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CWE CWE-915
Public Exploit ✅ No
Source NVD
Published 2026-06-24
Updated 2026-08-11
Modified 2026-06-26
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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