Vulnerability-Lookup

GHSA-356J-WM99-9QQC

Vulnerability from github – Published: 2026-10-30 18:32 – Updated: 2026-10-30 18:32

Details

RT's automatic link creation for URLs in HTML ticket content does not HTML-escape the URL it places in the link. A URL crafted to break out of the link's address can add a script that runs when the ticket history is displayed, with no further action by the viewer. Anyone who can add HTML content to a ticket can plant it. That includes an unauthenticated sender of HTML email to any queue that grants CreateTicket or ReplyToTicket to Everyone, which is routine for a queue that accepts mail from the public. The script runs in the session of any user who views the ticket, and can act in RT with that user's authority.

This issue was fixed in version 5.0.11 and 6.0.4

Severity

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-105454"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-30T16:17:36Z",
    "severity": "MODERATE"
  },
  "details": "RT\u0027s automatic link creation for URLs in HTML ticket content does\n      not HTML-escape the URL it places in the link. A URL crafted to\n      break out of the link\u0027s address can add a script that runs when the\n      ticket history is displayed, with no further action by the viewer.\n      Anyone who can add HTML content to a ticket can plant it. That\n      includes an unauthenticated sender of HTML email to any queue that\n      grants CreateTicket or ReplyToTicket to Everyone, which is routine\n      for a queue that accepts mail from the public. The script runs in\n      the session of any user who views the ticket, and can act in RT\n      with that user\u0027s authority.\n\n\nThis issue was fixed in version\u00a05.0.11 and 6.0.4",
  "id": "GHSA-356j-wm99-9qqc",
  "modified": "2026-10-30T18:32:36Z",
  "published": "2026-10-30T18:32:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105454"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2026/10/CVE-2026-105454"
    },
    {
      "type": "WEB",
      "url": "https://requesttracker.com/request-tracker"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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-2026-105454 (GCVE-0-2026-105454)

Vulnerability from cvelistv5 – Published: 2026-10-30 15:34 – Updated: 2026-10-30 17:18 X_Open Source

Title

Stored XSS via crafted URLs in HTML ticket content in Request Tracker

Summary

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-30 17:05 UTC

CWE

CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')

Assigner

CERT-PL CNA under the ENISA root

CNA scorecard B 81/100 over 256 records in the last 180 days details

References

2 references

URL	Tags
https://cert.pl/en/posts/2026/10/CVE-2026-105454	third-party-advisory
https://requesttracker.com/request-tracker/	product

Impacted products

1 product

Vendor	Product	Version
Best Practical Solutions	Request Tracker	Affected: 5.0.0 , < 5.0.11 (semver) Affected: 6.0.0 , < 6.0.4 (semver) cpe:2.3:a:best_practical_solutions:request_tracker:::::::: cpe:2.3:a:best_practical_solutions:request_tracker::::::::

Credits

Mateusz Szymaniec (CERT.PL)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105454",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-30T17:05:55.793778Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-30T17:18:21.963Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Request Tracker",
          "repo": "https://github.com/bestpractical/rtir",
          "vendor": "Best Practical Solutions",
          "versions": [
            {
              "lessThan": "5.0.11",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.0.4",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:best_practical_solutions:request_tracker:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.0.11",
                  "versionStartIncluding": "5.0.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:best_practical_solutions:request_tracker:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.4",
                  "versionStartIncluding": "6.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Mateusz Szymaniec (CERT.PL)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "RT\u0027s automatic link creation for URLs in HTML ticket content does\n      not HTML-escape the URL it places in the link. A URL crafted to\n      break out of the link\u0027s address can add a script that runs when the\n      ticket history is displayed, with no further action by the viewer.\n      Anyone who can add HTML content to a ticket can plant it. That\n      includes an unauthenticated sender of HTML email to any queue that\n      grants CreateTicket or ReplyToTicket to Everyone, which is routine\n      for a queue that accepts mail from the public. The script runs in\n      the session of any user who views the ticket, and can act in RT\n      with that user\u0027s authority.\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThis issue was fixed in version\u0026nbsp;5.0.11 and 6.0.4\u003c/div\u003e"
            }
          ],
          "value": "RT\u0027s automatic link creation for URLs in HTML ticket content does\n      not HTML-escape the URL it places in the link. A URL crafted to\n      break out of the link\u0027s address can add a script that runs when the\n      ticket history is displayed, with no further action by the viewer.\n      Anyone who can add HTML content to a ticket can plant it. That\n      includes an unauthenticated sender of HTML email to any queue that\n      grants CreateTicket or ReplyToTicket to Everyone, which is routine\n      for a queue that accepts mail from the public. The script runs in\n      the session of any user who views the ticket, and can act in RT\n      with that user\u0027s authority.\n\n\nThis issue was fixed in version\u00a05.0.11 and 6.0.4"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-592 Stored XSS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T15:34:57.607Z",
        "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
        "shortName": "CERT-PL"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/en/posts/2026/10/CVE-2026-105454"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://requesttracker.com/request-tracker/"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "Stored XSS via crafted URLs in HTML ticket content in Request Tracker",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Set @Active_MakeClicky to an empty list in\n      RT_SiteConfig.pm and restart the web server. This disables\n      automatic link creation for URLs in ticket content."
            }
          ],
          "value": "Set @Active_MakeClicky to an empty list in\n      RT_SiteConfig.pm and restart the web server. This disables\n      automatic link creation for URLs in ticket content."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 1.0.3"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
    "assignerShortName": "CERT-PL",
    "cveId": "CVE-2026-105454",
    "datePublished": "2026-10-30T15:34:57.607Z",
    "dateReserved": "2026-10-05T14:00:11.458Z",
    "dateUpdated": "2026-10-30T17:18:21.963Z",
    "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.

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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.
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