Vulnerability-Lookup

PYSEC-2025-154

Vulnerability from pysec - Published: 2025-11-27 11:15 - Updated: 2026-05-20 09:19

Details

Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer's name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing.

Severity

6.1 (Medium)


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

Impacted products

Name	purl
pretix	pkg:pypi/pretix

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pretix",
        "purl": "pkg:pypi/pretix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "2025.7.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0",
        "1.1.0",
        "1.1.1",
        "1.1.2",
        "1.1.3",
        "1.10.0",
        "1.10.1",
        "1.11.0",
        "1.11.1",
        "1.12.0",
        "1.12.1",
        "1.13.0",
        "1.13.1",
        "1.14.0",
        "1.15.0",
        "1.15.1",
        "1.15.2",
        "1.16.0",
        "1.17.0",
        "1.17.1",
        "1.2.0",
        "1.2.1.post2",
        "1.2.2",
        "1.3.0",
        "1.3.0.post1",
        "1.3.1",
        "1.4.0",
        "1.4.1",
        "1.5.0",
        "1.5.1",
        "1.5.2",
        "1.6.0",
        "1.6.1",
        "1.6.2",
        "1.7.1",
        "1.7.2",
        "1.8.0",
        "1.8.1",
        "1.9.0",
        "1.9.1",
        "2.0.0",
        "2.1.0",
        "2.2.0",
        "2.3.0",
        "2.4.0",
        "2.5.0",
        "2.6.0",
        "2.7.0",
        "2.7.1",
        "2.7.2",
        "2.8.2",
        "2023.10.0",
        "2023.10.1.post1",
        "2023.10.2",
        "2023.6.0",
        "2023.6.1",
        "2023.6.3",
        "2023.7.0",
        "2023.7.1",
        "2023.7.3",
        "2023.8.0",
        "2023.8.1",
        "2023.9.0",
        "2023.9.1",
        "2024.1.0",
        "2024.1.1",
        "2024.10.0",
        "2024.11.0",
        "2024.2.0",
        "2024.3.0",
        "2024.4.0",
        "2024.5.0",
        "2024.5.1",
        "2024.6.0",
        "2024.6.1",
        "2024.7.0",
        "2024.7.1",
        "2024.8.0",
        "2024.9.0",
        "2025.1.0",
        "2025.2.0",
        "2025.3.0",
        "2025.4.0",
        "2025.5.0",
        "2025.6.0",
        "2025.7.0",
        "2025.7.1",
        "3.0.0",
        "3.0.1",
        "3.1.0",
        "3.10.0",
        "3.11.0",
        "3.11.1",
        "3.12.0",
        "3.12.1",
        "3.13.0",
        "3.13.1",
        "3.14.0",
        "3.14.1",
        "3.14.2",
        "3.15.0",
        "3.16.0",
        "3.17.1",
        "3.17.2",
        "3.18.0",
        "3.2.0",
        "3.3.0",
        "3.4.0",
        "3.5.0",
        "3.6.0",
        "3.6.0.post1",
        "3.7.0",
        "3.8.0",
        "3.9.0",
        "4.0.0",
        "4.1.0",
        "4.10.0",
        "4.10.1",
        "4.11.0",
        "4.11.1",
        "4.12.0",
        "4.13.0",
        "4.13.1",
        "4.14.0",
        "4.14.0.dev0",
        "4.15.0",
        "4.15.0.dev0",
        "4.15.1",
        "4.16.0",
        "4.16.1",
        "4.17.0",
        "4.17.1",
        "4.18.0",
        "4.18.1",
        "4.18.2",
        "4.18.2.post1",
        "4.19.0",
        "4.2.0",
        "4.20.0",
        "4.20.1",
        "4.20.2.post1",
        "4.20.4",
        "4.3.0",
        "4.3.1",
        "4.4.0",
        "4.4.1",
        "4.5.0",
        "4.5.1",
        "4.5.2",
        "4.6.0",
        "4.6.1",
        "4.7.0",
        "4.7.1",
        "4.8.0",
        "4.9.0",
        "4.9.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-13742",
    "GHSA-2mm6-624x-fqrr"
  ],
  "details": "Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer\u0027s name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing.",
  "id": "PYSEC-2025-154",
  "modified": "2026-05-20T09:19:11.509307Z",
  "published": "2025-11-27T11:15:47.760Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://pretix.eu/about/en/blog/20251126-release-2025-9-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2mm6-624x-fqrr"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-13742 (GCVE-0-2025-13742)

Vulnerability from cvelistv5 – Published: 2025-11-27 11:04 – Updated: 2025-11-28 15:22

Title

Limited HTML injection in emails

Summary

Severity

2.4 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:L/SA:L/E:U

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-28 15:20 UTC

CWE

Limited HTML injection in emails
CWE-116 - Improper Encoding or Escaping of Output

Assigner

rami.io mitre root

References

1 reference

URL	Tags
https://pretix.eu/about/en/blog/20251126-release-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
pretix	pretix	Affected: 1.0.0 , < 2025.7.0 (python) Affected: 2025.7.0 , < 2025.8.0 (python) Affected: 2025.8.0 , < 2025.9.0 (python) Affected: 2025.9.0 , < 2025.10.0 (python)

Date Public

2025-11-27 11:00

Credits

Jan Roring (binsec GmbH)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-13742",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-28T15:20:23.125472Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-116",
                "description": "CWE-116 Improper Encoding or Escaping of Output",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-28T15:22:05.481Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/",
          "defaultStatus": "unaffected",
          "packageName": "pretix",
          "product": "pretix",
          "repo": "https://github.com/pretix/pretix",
          "vendor": "pretix",
          "versions": [
            {
              "lessThan": "2025.7.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "python"
            },
            {
              "changes": [
                {
                  "at": "2025.7.2",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2025.8.0",
              "status": "affected",
              "version": "2025.7.0",
              "versionType": "python"
            },
            {
              "changes": [
                {
                  "at": "2025.8.1",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2025.9.0",
              "status": "affected",
              "version": "2025.8.0",
              "versionType": "python"
            },
            {
              "changes": [
                {
                  "at": "2025.9.1",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2025.10.0",
              "status": "affected",
              "version": "2025.9.0",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jan Roring (binsec GmbH)"
        }
      ],
      "datePublic": "2025-11-27T11:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer\u0027s name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing."
            }
          ],
          "value": "Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer\u0027s name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-134",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-134 Email Injection"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 2.4,
            "baseSeverity": "LOW",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:L/SA:L/E:U",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Limited HTML injection in emails",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-27T11:04:36.990Z",
        "orgId": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
        "shortName": "rami.io"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://pretix.eu/about/en/blog/20251126-release-2025-9-1/"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Limited HTML injection in emails",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
    "assignerShortName": "rami.io",
    "cveId": "CVE-2025-13742",
    "datePublished": "2025-11-27T11:04:36.990Z",
    "dateReserved": "2025-11-26T14:01:07.019Z",
    "dateUpdated": "2025-11-28T15:22:05.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-2MM6-624X-FQRR

Vulnerability from github – Published: 2025-11-27 12:30 – Updated: 2026-06-09 16:12

Summary

pretix has Email Content Injection Through Maliciously Formatted Names

Details

Severity

2.4 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:L/SA:L/E:U

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pretix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "2025.7.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pretix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2025.8.0"
            },
            {
              "fixed": "2025.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pretix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2025.9.0"
            },
            {
              "fixed": "2025.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-13742"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-116"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-09T16:12:33Z",
    "nvd_published_at": "2025-11-27T11:15:47Z",
    "severity": "LOW"
  },
  "details": "Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer\u0027s name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing.",
  "id": "GHSA-2mm6-624x-fqrr",
  "modified": "2026-06-09T16:12:34Z",
  "published": "2025-11-27T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13742"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pretix/pretix"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pretix/PYSEC-2025-154.yaml"
    },
    {
      "type": "WEB",
      "url": "https://pretix.eu/about/en/blog/20251126-release-2025-9-1"
    },
    {
      "type": "WEB",
      "url": "https://pretix.eu/about/en/security"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20251129201933/https://pretix.eu/about/en/blog/20251127-release-2025-9-2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:L/SA:L/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pretix has Email Content Injection Through Maliciously Formatted Names"
}

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.
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

PYSEC-2025-154

CVE-2025-13742 (GCVE-0-2025-13742)

GHSA-2MM6-624X-FQRR

Tags

Sightings

Nomenclature

Related by attack behaviour