Vulnerability-Lookup

(CVE-2026-107257)

Vulnerability from drupal – Published: 2026-10-07 16:22 – Updated: 2026-10-07 16:22 – Source website

Details

Actstream (short for Activity Stream) aggregates a user's activity from external services (RSS feeds, etc.) into per-user activity stream entities.

The configuration route does not sufficiently check that the user editing it is the account owner (or a user administrator) leading to an access bypass vulnerability.

Credits

Marcus Johansson (marcus_johansson) www.drupal.org/u/marcus_johansson

References

URL

Type

https://www.drupal.org/sa-contrib-2026-198

WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "\u003c2.0.1 || \u003e=2.1.0 \u003c2.1.1"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/actstream"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "\u003c2.0.1"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "database_specific": {
            "constraint": "\u003e=2.1.0 \u003c2.1.1"
          },
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": []
    }
  ],
  "aliases": [
    "CVE-2026-107257"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/marcus_johansson"
      ],
      "name": "Marcus Johansson (marcus_johansson)"
    }
  ],
  "details": "Actstream (short for Activity Stream) aggregates a user\u0027s activity from external services (RSS feeds, etc.) into per-user activity stream entities.\n\nThe configuration route does not sufficiently check that the user editing it is the account owner (or a user administrator) leading to an access bypass vulnerability.",
  "id": "DRUPAL-CONTRIB-2026-198",
  "modified": "2026-10-07T16:22:05.000Z",
  "published": "2026-10-07T16:22:05.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-198"
    }
  ],
  "schema_version": "1.7.0"
}

CVE-2026-107257 (GCVE-0-2026-107257)

Vulnerability from cvelistv5 – Published: 2026-10-30 03:10 – Updated: 2026-10-30 20:00

Title

Actstream - Critical - Access bypass - SA-CONTRIB-2026-198

Summary

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.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-30 19:59 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

drupal CNA under the mitre root

CNA scorecard D 53/100 over 281 records in the last 180 days details

References

1 reference

URL	Tags
https://www.drupal.org/sa-contrib-2026-198

Impacted products

1 product

Vendor	Product	Version
Drupal	Actstream	Affected: 0.0.0 , < 2.0.1 (semver) Affected: 2.1.0 , < 2.1.1 (semver)

Date Public

2026-10-07 16:22

Credits

Marcus Johansson (marcus_johansson) Reva Gomes (revagomes) Swan Kalata (akalata) Greg Knaddison (greggles)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-107257",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-30T19:59:58.611124Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-30T20:00:02.424Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://www.drupal.org/project/actstream",
          "product": "Actstream",
          "repo": "https://git.drupalcode.org/project/actstream",
          "vendor": "Drupal",
          "versions": [
            {
              "lessThan": "2.0.1",
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.1.1",
              "status": "affected",
              "version": "2.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Marcus Johansson (marcus_johansson)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Reva Gomes (revagomes)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Swan Kalata (akalata)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Greg Knaddison (greggles)"
        }
      ],
      "datePublic": "2026-10-07T16:22:05.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-87",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-87 Forceful Browsing"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T03:10:17.831Z",
        "orgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
        "shortName": "drupal"
      },
      "references": [
        {
          "url": "https://www.drupal.org/sa-contrib-2026-198"
        }
      ],
      "title": "Actstream - Critical - Access bypass - SA-CONTRIB-2026-198"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
    "assignerShortName": "drupal",
    "cveId": "CVE-2026-107257",
    "datePublished": "2026-10-30T03:10:17.831Z",
    "dateReserved": "2026-10-07T15:25:19.994Z",
    "dateUpdated": "2026-10-30T20:00:02.424Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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