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  4. CVE 2026 118574 s3 file system moderately critical access bypass
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-118574

S3 File System - Moderately critical - Access bypass - SA-CONTRIB-2026-279CVE-2026-118574

Answer in brief

CVE-2026-118574 records a Unknown severity vulnerability in S3 File System - Moderately critical - Access bypass - SA-CONTRIB-2026-279. The current sources do not mark it as known exploited. The current feed maps Drupal/S3 File System (generic), drupal/s3fs (packagist:https://packages.drupal.org/8). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 30, 2026Updated Oct 30, 2026Source checked Oct 30, 2026First seen by HOL Oct 28, 2026Material review Oct 30, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Drupal/S3 File System (generic), drupal/s3fs (packagist:https://packages.drupal.org/8). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Drupal/S3 File Systemgeneric>=0.0.0 <3.12.03.12.0
drupal/s3fspackagist:https://packages.drupal.org/8>=0 <3.12.03.12.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Drupal/S3 File System, drupal/s3fs.
  2. 2Review the reported fix. Update Drupal/S3 File System to 3.12.0; drupal/s3fs to 3.12.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • Source referencedrupal.org
Upstream source description

Incorrect Permission Assignment for Critical Resource vulnerability in Drupal S3 File System allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects S3 File System versions: from 0.0.0 to 3.12.0.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-732
Source
CVE List V5
Source checked
Oct 30, 2026
References
1 linked source
Open source record