Vulnerability-Lookup

CVE-2026-107394 (GCVE-0-2026-107394)

Vulnerability from cvelistv5 – Published: 2026-10-08 19:55 – Updated: 2026-10-09 15:54

Title

Indico: Incomplete Server-Side Request Forgery (SSRF) check

Summary

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, the previous fix for CVE-2026-25738 did not cover an edge case, allowing an event organizer to submit a crafted URL that points to a prohibited local target but is accepted as valid by Indico. The organizer can read data returned by the target through affected Indico features. This issue is fixed in version 3.3.13.

Severity

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-09 15:54 UTC

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7642 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/indico/indico/security/advisor…	x_refsource_CONFIRM
https://github.com/indico/indico/pull/7573	x_refsource_MISC
https://github.com/indico/indico/commit/44540e70a…	x_refsource_MISC
https://github.com/indico/indico/releases/tag/v3.3.13	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
indico	indico	Affected: < 3.3.13	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-107394

Vulnerability from fkie_nvd - Published: 2026-10-08 20:17 - Updated: 2026-10-09 16:17

Severity

6.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/indico/indico/commit/44540e70ab4e20a12f14ddba5218a33749a86736
	security-advisories@github.com	https://github.com/indico/indico/pull/7573
	security-advisories@github.com	https://github.com/indico/indico/releases/tag/v3.3.13
	security-advisories@github.com	https://github.com/indico/indico/security/advisories/GHSA-2v95-h47v-g4x9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "indico",
          "vendor": "indico",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.3.13"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
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    {
      "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, the previous fix for CVE-2026-25738 did not cover an edge case, allowing an event organizer to submit a crafted URL that points to a prohibited local target but is accepted as valid by Indico. The organizer can read data returned by the target through affected Indico features. This issue is fixed in version 3.3.13."
    }
  ],
  "id": "CVE-2026-107394",
  "lastModified": "2026-10-09T16:17:22.920",
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          "attackVector": "NETWORK",
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          "baseScore": 6.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
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GHSA-2V95-H47V-G4X9

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

Summary

Indico: Incomplete Server-Side Request Forgery (SSRF) check

Details

Impact

Indico makes outgoing requests to user-provides URLs in various places. This is mostly intentional and part of Indico's functionality, but of course it is never intended to let you access "special" targets such as localhost or cloud metadata endpoints. The previous fix (CVE-2026-25738) did not cover an edge case so it was still possible to craft a URL that pointed to a local target but was accepted as valid by Indico.

Patches

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

Workarounds

If you do not have IPs that expose sensitive data without authentication (typically because you do not host Indico on AWS), this vulnerability doesn't impact you and you can ignore it (but please upgrade anyway). Also, only event organizers can access endpoints where SSRF could be used to actually see the data returned by such a request. So if you trust your event organizers, the risk is also very limited.

For additional security, both before and after patching, you could also use the common proxy-related environment variables (in particular http_proxy and https_proxy) to force outgoing requests to go through a proxy that limits requests in whatever way you deem useful/necessary. These environment variables would need to be set both on the indico-uwsgi and indico-celery services. Please note that setting up such a proxy is not something we can help you with.

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

6.8 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "indico"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-107394"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-08T22:09:55Z",
    "nvd_published_at": "2026-10-08T20:17:34Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nIndico makes outgoing requests to user-provides URLs in various places. This is mostly intentional and part of Indico\u0027s functionality, but of course it is never intended to let you access \"special\" targets such as localhost or cloud metadata endpoints. The previous fix (CVE-2026-25738) did not cover an edge case so it was still possible to craft a URL that pointed to a local target but was accepted as valid by Indico.\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\nIf you do not have IPs that expose sensitive data without authentication (typically because you do not host Indico on AWS), this vulnerability doesn\u0027t impact you and you can ignore it (but please upgrade anyway).\nAlso, only event organizers can access endpoints where SSRF could be used to actually see the data returned by such a request. So if you trust your event organizers, the risk is also very limited.\n\nFor additional security, both before and after patching, you could also use the common proxy-related environment variables (in particular `http_proxy` and `https_proxy`) to force outgoing requests to go through a proxy that limits requests in whatever way you deem useful/necessary. These environment variables would need to be set both on the indico-uwsgi and indico-celery services. Please note that setting up such a proxy is not something we can help you with.\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-2v95-h47v-g4x9",
  "modified": "2026-10-08T22:09:55Z",
  "published": "2026-10-08T22:09:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/security/advisories/GHSA-2v95-h47v-g4x9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107394"
    },
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/pull/7573"
    },
    {
      "type": "WEB",
      "url": "https://github.com/indico/indico/commit/44540e70ab4e20a12f14ddba5218a33749a86736"
    },
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      "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:H/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Indico: Incomplete Server-Side Request Forgery (SSRF) check"
}

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.

Action not permitted

CVE-2026-107394 (GCVE-0-2026-107394)

FKIE_CVE-2026-107394

GHSA-2V95-H47V-G4X9

Impact

Patches

Workarounds

For more information

Tags

Sightings

Nomenclature

Related by attack behaviour