CVE-2026-45687
HIGHDescription
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 to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 27% of all known CVEs.
References
Related Vulnerabilities
Other CWE-915 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-4068 | Medium | 5.4 | 34% | - | Fix |
| CVE-2024-5452 | Critical | 9.8 | 27% | - | Fix |
| CVE-2026-30822 | High | 7.7 | 13% | - | Fix |
| CVE-2026-33453 | Critical | 10.0 | 6.2% | - | - |
| CVE-2026-41277 | High | 8.8 | 3.1% | - | Fix |
| CVE-2022-43441 | High | 8.1 | 2.4% | - | Fix |
Common questions
How do I fix CVE-2026-45687?
No published fix for CVE-2026-45687 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-45687 being actively exploited?
Not that we know of. CVE-2026-45687 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.34% is the estimated probability that it will be exploited in the next 30 days. That is higher than 27% of all scored CVEs.
How severe is CVE-2026-45687?
CVE-2026-45687 has a CVSS v3 base score of 8.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-26.