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TI-2026-82833 Aliases CVE-2026-107257GHSA-49qr-j2v8-5wg8

Incorrect authorization in Drupal Actstream allows forceful browsing

Priority LOW 34CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

Drupal Actstream versions from 0.0.0 before 2.0.1 and from 2.1.0 before 2.1.1 contain an incorrect authorization flaw (CWE-863). A remote attacker without privileges can use forceful browsing to reach pages that should be restricted, which leads to limited disclosure and modification of data.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Incorrect Authorization vulnerability in Drupal Actstream allows Forceful Browsing. This issue affects Actstream versions: from 0.0.0 to 2.0.1, from 2.1.0 to 2.1.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00194 9th percentileScored 2026-11-07
Fix Fixed Actstream (Drupal): 2.0.1, 2.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DrupalActstream0.0.0 to before 2.0.1; 2.1.0 to before 2.1.12.0.1, 2.1.1Patch availableCNA
  • Actstream VendorDrupal Affected 0.0.0 to before 2.0.1; 2.1.0 to before 2.1.1 Fixed in 2.0.1, 2.1.1 Patch available CNA

Remediation

Upgrade Drupal Actstream to version 2.0.1 or to version 2.1.1, depending on the installed release. The fix is described in Drupal security advisory SA-CONTRIB-2026-198.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Actstream (Drupal) Fixed in 2.0.1, 2.1.1

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-107257
  2. 2026-10-30 Alias added: GHSA-49qr-j2v8-5wg8
  3. 2026-10-30 CVSS score added · CISA ADP
  4. 2026-10-30 CISA SSVC decision points changed

References

Other 1

  • TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
  • TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
  • TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8
See all 941 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences