CVE-2026-61844

Status: DeferredHigh (7.1)—

Severity7.1High · CVSS 3.1

Exploitation probability0.25 %higher than 16% 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 3.18.0, FileRise flattens logical folder paths into metadata filenames by replacing separators and spaces with hyphens, so distinct folders such as team/docs and team-docs can share one metadata file. Because uploader metadata is used to authorize read_own and ownership-restricted edits, a low-privileged user who controls one colliding folder, knows the target basename, and already has read_own access to the target folder can alter the metadata used by that folder, make the victim file appear attacker-owned, read it, and modify it when edit-own permission is also available. This issue is fixed in version 3.18.0.

CVSS

Base score: 7.1
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.25 %
Percentile among all scored CVEs: 16
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.

ExploitationT1210 Exploitation of Remote Serviceslateral movement80 %
Primary impactT1005 Data from Local Systemcollection75 %
Secondary impactT1565.001 Stored Data Manipulationimpact60 %

El vector es AV:N con PR:L y UI:N, lo que da T1210. El texto indica que el atacante puede leer el fichero víctima y modificarlo si tiene permiso de edición propia.

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 Threat Intelligence Program Restrict File and Directory Permissions Privileged Account Management Remote Data Storage Network Segmentation

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-706

References

Show 4 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-61844",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-61844",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-15T13:55:23.284160Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "security-advisories@github.com",
        "cvssData": {
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          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.6
      }
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  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "error311",
          "product": "FileRise",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.18.0"
            }
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  "published": "2026-10-14T21:17:38.137",
  "references": [
    {
      "url": "https://github.com/error311/FileRise/commit/9ed1a38f00918849dbda30f54291d1451ed80d11",
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      "url": "https://github.com/error311/FileRise/releases/tag/v3.18.0",
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    {
      "url": "https://github.com/error311/FileRise/security/advisories/GHSA-qpm8-pgmq-wxmh",
      "source": "security-advisories@github.com"
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  "descriptions": [
    {
      "lang": "en",
      "value": "FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.18.0, FileRise flattens logical folder paths into metadata filenames by replacing separators and spaces with hyphens, so distinct folders such as team/docs and team-docs can share one metadata file. Because uploader metadata is used to authorize read_own and ownership-restricted edits, a low-privileged user who controls one colliding folder, knows the target basename, and already has read_own access to the target folder can alter the metadata used by that folder, make the victim file appear attacker-owned, read it, and modify it when edit-own permission is also available. This issue is fixed in version 3.18.0."
    }
  ],
  "lastModified": "2026-10-15T14:17:26.637",
  "sourceIdentifier": "security-advisories@github.com"
}