Security readout for executives and security teams
Plain-English summary
Rocket.Chat had an information disclosure flaw where a logged-in user could obtain upload URLs they should not be allowed to access. The issue is rated medium because it requires an authenticated user and affects confidentiality, not system integrity or availability.
Executive priority
Treat this as a near-term patching item, especially for externally reachable or large-user Rocket.Chat deployments. It is not presented as a critical outage risk, but unauthorized file URL disclosure can expose sensitive internal communications or attachments.
Technical view
CVE-2022-35246 is a NoSQL-injection information disclosure issue in the Rocket.Chat getS3FileUrl Meteor server method. Affected versions are Rocket.Chat before 4.7.5, before 4.8.2, and before 5.0. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Likely exposure
Exposure is most relevant for Rocket.Chat deployments running affected versions with uploaded files whose URLs should be access-controlled. The vulnerability requires a low-privileged authenticated account, so externally reachable workspaces with broad user access carry more practical risk.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. Public details indicate authenticated network access is sufficient, but the supplied bundle does not prove exploitation in the wild or provide operational attack prevalence.
Researcher notes
Focus validation on version, authentication boundary, file upload storage, and whether unauthorized users could access upload URLs. The source bundle names the vulnerable method and fixed versions but does not provide complete environmental prerequisites or evidence of exploitation.
Mitigation direction
- Upgrade Rocket.Chat to 4.7.5, 4.8.2, 5.0, or a later supported release.
- Check Rocket.Chat vendor guidance for branch-specific upgrade instructions.
- Restrict Rocket.Chat account creation and access until affected instances are upgraded.
- Review file upload access policies for sensitive uploaded content.
Validation and detection
- Inventory Rocket.Chat versions across production, staging, and self-hosted instances.
- Confirm affected instances are below 4.7.5, 4.8.2, or 5.0.
- Identify whether S3-backed upload URL handling is used.
- Review available Rocket.Chat logs for unusual file URL access patterns.
- Document compensating controls for any instance awaiting upgrade.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-35246 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://hackerone.com/reports/1458020CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.