Vulnerability-Lookup

GHSA-6P4F-J8J6-463Q

Vulnerability from github – Published: 2026-10-08 22:09 – Updated: 2026-10-08 22:09

Summary

Indico: Missing access check in legacy session export API

Details

Impact

A legacy API to retrieve session details could be misused to retrieve metadata (such as title, description and conveners) of a restricted session within without having access to that session, as long as the event itself was accessible.

Patches

You should to update to Indico 3.3.13 as soon as possible. See the docs for instructions on how to update.

Workarounds

Restrict access to the event itself

For more information

If you have any questions or comments about this advisory:

Open a thread in our forum
Email us privately at indico-team@cern.ch

Severity

4.3 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "indico"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-107395"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-08T22:09:49Z",
    "nvd_published_at": "2026-10-08T20:17:34Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nA legacy API to retrieve session details could be misused to retrieve metadata (such as title, description and conveners) of a restricted session within without having access to that session, as long as the event itself was accessible.\n\n### Patches\nYou should to update to [Indico 3.3.13](https://github.com/indico/indico/releases/tag/v3.3.13) as soon as possible.\nSee [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update.\n\n### Workarounds\nRestrict access to the event itself\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open a thread in [our forum](https://talk.getindico.io/)\n- Email us privately at [indico-team@cern.ch](mailto:indico-team@cern.ch)",
  "id": "GHSA-6p4f-j8j6-463q",
  "modified": "2026-10-08T22:09:50Z",
  "published": "2026-10-08T22:09:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/security/advisories/GHSA-6p4f-j8j6-463q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107395"
    },
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/commit/524e8e93eadcd8484905b1147020a35f5dce6038"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/indico/indico"
    },
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/releases/tag/v3.3.13"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Indico: Missing access check in legacy session export API"
}

CVE-2026-107395 (GCVE-0-2026-107395)

Vulnerability from cvelistv5 – Published: 2026-10-08 19:57 – Updated: 2026-10-09 11:49

Title

Indico: Missing access check in legacy session export API

Summary

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, an authenticated user can misuse the legacy session export API to retrieve details for a restricted session without access to that session, as long as the containing event is accessible. The missing access check can disclose session metadata such as the title, description, and conveners. This issue is fixed in version 3.3.13.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-09 11:48 UTC

CWE

CWE-862 - Missing Authorization

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7595 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/indico/indico/security/advisor…	x_refsource_CONFIRM
https://github.com/indico/indico/commit/524e8e93e…	x_refsource_MISC
https://github.com/indico/indico/releases/tag/v3.3.13	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
indico	indico	Affected: < 3.3.13

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-107395",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-09T11:48:53.899951Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-09T11:49:03.687Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "indico",
          "vendor": "indico",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.3.13"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, an authenticated user can misuse the legacy session export API to retrieve details for a restricted session without access to that session, as long as the containing event is accessible. The missing access check can disclose session metadata such as the title, description, and conveners. This issue is fixed in version 3.3.13."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-08T19:57:39.353Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/indico/indico/security/advisories/GHSA-6p4f-j8j6-463q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/indico/indico/security/advisories/GHSA-6p4f-j8j6-463q"
        },
        {
          "name": "https://github.com/indico/indico/commit/524e8e93eadcd8484905b1147020a35f5dce6038",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/indico/indico/commit/524e8e93eadcd8484905b1147020a35f5dce6038"
        },
        {
          "name": "https://github.com/indico/indico/releases/tag/v3.3.13",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/indico/indico/releases/tag/v3.3.13"
        }
      ],
      "source": {
        "advisory": "GHSA-6p4f-j8j6-463q",
        "discovery": "UNKNOWN"
      },
      "title": "Indico: Missing access check in legacy session export API"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-107395",
    "datePublished": "2026-10-08T19:57:39.353Z",
    "dateReserved": "2026-10-07T21:07:54.989Z",
    "dateUpdated": "2026-10-09T11:49:03.687Z",
    "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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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