CVE-2026-55498

Status: DeferredMedium (4.8)—

Severity4.8Medium · CVSS 3.1

Exploitation probability0.28 %higher than 19% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.15.0, FileRise public shared-folder links with subfolder browsing enabled can follow a symbolic link inside the shared folder to a sibling directory under the upload root. An unauthenticated holder of a valid share token can use shared-folder listing, direct download, or ZIP creation to access files outside the folder that was actually shared. The flaw occurs because the affected shared-folder paths resolve symlinks without enforcing the original shared folder as the real-path boundary. This issue is fixed in version 3.15.0.

CVSS

Base score: 4.8
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.28 %
Percentile among all scored CVEs: 19
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access92 %
Primary impactT1005 Data from Local Systemcollection78 %

Vector AV:N/PR:N/UI:N; sin autenticación, un token de compartición sigue symlinks y permite listar, descargar o comprimir archivos fuera de la carpeta compartida (CWE-59).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Application Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Filerise — Filerise^AI

CWEs

CWE-59

References

Show 4 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-55498",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-15T15:28:12.261024Z"
        }
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    "cvssMetricV31": [
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          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.2
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    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "error311",
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          "versions": [
            {
              "status": "affected",
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  "published": "2026-10-14T20:17:49.050",
  "references": [
    {
      "url": "https://github.com/error311/FileRise/commit/f24af3f2a25cec092d19de93acbc215e74659a22",
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    {
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      "source": "security-advisories@github.com"
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      "value": "FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.15.0, FileRise public shared-folder links with subfolder browsing enabled can follow a symbolic link inside the shared folder to a sibling directory under the upload root. An unauthenticated holder of a valid share token can use shared-folder listing, direct download, or ZIP creation to access files outside the folder that was actually shared. The flaw occurs because the affected shared-folder paths resolve symlinks without enforcing the original shared folder as the real-path boundary. This issue is fixed in version 3.15.0."
    }
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  "lastModified": "2026-10-15T16:18:14.007",
  "sourceIdentifier": "security-advisories@github.com"
}