Vulnerability-Lookup

GHSA-R7Q3-25G3-96CC

Vulnerability from github – Published: 2026-09-01 21:31 – Updated: 2026-09-01 21:31

Details

Cypht before 2.12.2 contains a cross-site scripting vulnerability in the contacts module that allows remote attackers to execute arbitrary script content by embedding malicious payloads within angle brackets in the FROM email header. The sanitization logic removes only the first occurrence of each angle bracket character, leaving additional angle brackets intact, which attackers exploit by delivering a crafted email whose FROM header executes script in the victim's browser when the user opens the message and accesses the Add Local Contacts function.

Severity

6.1 (Medium)


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

5.1 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-73524"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-01T21:18:36Z",
    "severity": "MODERATE"
  },
  "details": "Cypht before 2.12.2 contains a cross-site scripting vulnerability in the contacts module that allows remote attackers to execute arbitrary script content by embedding malicious payloads within angle brackets in the FROM email header. The sanitization logic removes only the first occurrence of each angle bracket character, leaving additional angle brackets intact, which attackers exploit by delivering a crafted email whose FROM header executes script in the victim\u0027s browser when the user opens the message and accesses the Add Local Contacts function.",
  "id": "GHSA-r7q3-25g3-96cc",
  "modified": "2026-09-01T21:31:50Z",
  "published": "2026-09-01T21:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73524"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cypht-org/cypht/pull/2072"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cypht-org/cypht/commit/372343783b3d21c12f74bb88d0eef36c1579c062"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cypht-org/cypht/releases/tag/v2.12.2"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/cypht-xss-via-from-email-header-in-contacts-module"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-73524 (GCVE-0-2026-73524)

Vulnerability from cvelistv5 – Published: 2026-09-01 20:44 – Updated: 2026-09-04 02:10 X_Open Source

Title

Cypht < 2.12.2 XSS via FROM Email Header in Contacts Module

Summary

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

6.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 02:09 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/cypht-org/cypht/releases/tag/v2.12.2	release-notes
https://github.com/cypht-org/cypht/pull/2072	issue-tracking
https://github.com/cypht-org/cypht/commit/3723437…	patch
https://www.vulncheck.com/advisories/cypht-xss-vi…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
cypht-org	cypht	Affected: 0 , < 2.12.2 (semver)

Date Public

2026-08-15 00:00

Credits

Adam Młynarczyk

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73524",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-04T02:09:55.818544Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-04T02:10:07.916Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/cypht-org/cypht",
          "product": "cypht",
          "repo": "https://github.com/cypht-org/cypht",
          "vendor": "cypht-org",
          "versions": [
            {
              "lessThan": "2.12.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Adam M\u0142ynarczyk"
        }
      ],
      "datePublic": "2026-08-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Cypht before 2.12.2 contains a cross-site scripting vulnerability in the contacts module that allows remote attackers to execute arbitrary script content by embedding malicious payloads within angle brackets in the FROM email header. The sanitization logic removes only the first occurrence of each angle bracket character, leaving additional angle brackets intact, which attackers exploit by delivering a crafted email whose FROM header executes script in the victim\u0027s browser when the user opens the message and accesses the Add Local Contacts function."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
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            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
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      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T20:44:51.262Z",
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      "references": [
        {
          "name": "Release Notes",
          "tags": [
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          ],
          "url": "https://github.com/cypht-org/cypht/releases/tag/v2.12.2"
        },
        {
          "name": "Pull Request",
          "tags": [
            "issue-tracking"
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          "url": "https://github.com/cypht-org/cypht/pull/2072"
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        {
          "name": "Patch Commit",
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          "url": "https://github.com/cypht-org/cypht/commit/372343783b3d21c12f74bb88d0eef36c1579c062"
        },
        {
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/cypht-xss-via-from-email-header-in-contacts-module"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "tags": [
        "x_open-source"
      ],
      "title": "Cypht \u003c 2.12.2 XSS via FROM Email Header in Contacts Module",
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-73524",
    "datePublished": "2026-09-01T20:44:51.262Z",
    "dateReserved": "2026-08-12T19:29:19.866Z",
    "dateUpdated": "2026-09-04T02:10:07.916Z",
    "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.

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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

GHSA-R7Q3-25G3-96CC

CVE-2026-73524 (GCVE-0-2026-73524)

Tags

Sightings

Nomenclature

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