Vulnerability-Lookup

CVE-2026-34442 (GCVE-0-2026-34442)

Vulnerability from cvelistv5 – Published: 2026-03-31 21:28 – Updated: 2026-04-01 13:36

Title

FreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout

Summary

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, host header manipulation in FreeScout version (http://localhost:8080/system/status) allows an attacker to inject an arbitrary domain into generated absolute URLs. This leads to External Resource Loading and Open Redirect behavior. When the application constructs links and assets using the unvalidated Host header, user requests can be redirected to attacker-controlled domains and external resources may be loaded from malicious servers. This issue has been patched in version 1.8.211.

Severity

5.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation
CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/freescout-help-desk/freescout/…	x_refsource_CONFIRM
https://github.com/freescout-help-desk/freescout/…	x_refsource_MISC
https://github.com/freescout-help-desk/freescout/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
freescout-help-desk	freescout	Affected: < 1.8.211

Show details on NVD website

JSON

To clipboard

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      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
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      "title": "FreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout",
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FKIE_CVE-2026-34442

Vulnerability from fkie_nvd - Published: 2026-03-31 22:16 - Updated: 2026-06-17 10:39

Severity

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/freescout-help-desk/freescout/commit/889d75c8e3c15e6a7ddb6a4d4f65cc0379c29213	Patch
security-advisories@github.com	https://github.com/freescout-help-desk/freescout/releases/tag/1.8.211	Release Notes
security-advisories@github.com	https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj	Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	freescout	freescout	*

JSON

To clipboard

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  "affected": [
    {
      "affectedData": [
        {
          "product": "freescout",
          "vendor": "freescout-help-desk",
          "versions": [
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              "version": "\u003c 1.8.211"
            }
          ]
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      ],
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    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "1.8.211",
              "vulnerable": true
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    }
  ],
  "id": "CVE-2026-34442",
  "lastModified": "2026-06-17T10:39:03.353",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
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        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
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          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "poc"
            },
            {
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            },
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            }
          ],
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          "version": "2.0.3"
        }
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  },
  "published": "2026-03-31T22:16:19.333",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
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      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
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    },
    {
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      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
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    },
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        },
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}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-34442 (GCVE-0-2026-34442)

FKIE_CVE-2026-34442

Tags

Sightings

Nomenclature