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PatchSiren cyber security CVE debrief

CVE-2026-73477 Drupal CVE debrief

The CVE-2026-73477 vulnerability in the Drupal Quick Tabs module allows for forceful browsing due to incorrect authorization. This issue affects Quick Tabs versions from 0.0.0 to 4.3.1. The CVSS score is 5.3, indicating a medium severity. The CVE was published on 2026-09-02 and last modified on 2026-09-16. Defenders should verify the versions of Quick Tabs in use and assess exposure, especially in environments where the module is utilized for tabbed content display. This verification is crucial to prevent potential forceful browsing attempts.

Vendor
Drupal
Product
Quick Tabs
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-02
Original CVE updated
2026-09-16
Advisory published
2026-09-02
Advisory updated
2026-09-16

Who should care

Defenders responsible for Drupal installations, especially those using the Quick Tabs module, should assess exposure and verify versions in use.

Why it matters

The CVE-2026-73477 vulnerability in Drupal Quick Tabs requires verification of versions and exposure to prevent potential forceful browsing attempts.

  • Verification of Quick Tabs versions and exposure is necessary
  • Potential for forceful browsing attempts exists

Technical summary

The Incorrect Authorization vulnerability in Drupal Quick Tabs allows Forceful Browsing. This issue affects Quick Tabs versions from 0.0.0 to 4.3.1. The vulnerability has a CVSS score of 5.3, indicating a medium severity. The vulnerability allows attackers to bypass authorization mechanisms, potentially leading to unauthorized access or actions within the affected systems. Defenders should prioritize verifying the versions of Quick Tabs in use and assessing exposure, especially in environments where the module is utilized for tabbed content display.

Defensive priority

Defenders should prioritize verifying the versions of Quick Tabs in use and assessing exposure, especially in environments where the module is utilized for tabbed content display.

Recommended defensive actions

  • Verify the version of Quick Tabs in use and assess exposure
  • Review and update Quick Tabs to version 4.3.2 or later if necessary
  • Monitor for potential forceful browsing attempts

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its impact, and affected versions. A third-party advisory from Drupal.org is also available.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-73477 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-73477

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-73477 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-73477

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.