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CVE Record

CVE-2020-26804: In Sentrifugo 3.2, users can share an announcement under "Organization -> Announcements" tab.

In Sentrifugo 3.2, users can share an announcement under "Organization -> Announcements" tab. Also, in this page, users can upload attachments with the shared announcements. This "Upload Attachment" functionality is suffered from "Unrestricted File Upload" vulnerability so attacker can upload malicious files using this functionality and control the server.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-26804 is an authenticated unrestricted file upload issue in Sentrifugo 3.2 announcements. A user who can access Organization -> Announcements and upload attachments may be able to place malicious files on the server, with reported server-control impact. No source in the bundle confirms active exploitation.

Executive priority

Treat this as high priority if Sentrifugo 3.2 is in use, especially on internet-facing or broadly accessible systems. The reported impact is server control, but available evidence does not confirm exploitation in the wild or name a patched release.

Technical view

The flaw is in the Upload Attachment functionality for shared announcements in Sentrifugo 3.2. The CVE description states the upload control does not sufficiently restrict uploaded files, allowing malicious file upload and potential server compromise. The bundle provides no CVSS, CWE, patch version, or vendor mitigation detail.

Likely exposure

Exposure is likely limited to Sentrifugo 3.2 deployments where users can authenticate and access Organization -> Announcements with attachment upload enabled.

Exploitation context

The CVE is not listed as KEV in the bundle, and no cited source confirms active exploitation. The described attack requires authenticated application access and the ability to upload announcement attachments. Evidence for exact prerequisites, default permissions, and fixed versions is incomplete.

Researcher notes

The public bundle is sparse: no CVSS vector, CWE, CPE, fixed version, or official advisory is provided. Analysis should avoid assuming unauthenticated reachability. Focus validation on role access, upload handling, file storage behavior, and whether maintained project guidance exists.

Mitigation direction

  • Identify any Sentrifugo 3.2 deployments and their business owners.
  • Check Sentrifugo or project guidance for fixed versions or official remediation.
  • Restrict announcement attachment upload access to trusted administrators where feasible.
  • Temporarily disable announcement attachments if the feature is not required.
  • Review uploaded announcement attachments for unexpected executable or script-like files.
  • Increase monitoring around the application host and upload storage paths.

Validation and detection

  • Confirm whether Sentrifugo 3.2 is deployed in production or reachable environments.
  • Review which roles can access Organization -> Announcements and upload attachments.
  • Inspect recent announcement attachments for suspicious file types or unexpected content.
  • Check application and web server logs for unusual attachment upload activity.
  • Verify whether any vendor or project patch has been applied.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

description · low confidence lookup

File 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 lookup
cve · low confidence lookup

CVE-2020-26804 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.