{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-55696",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-17T00:13:10.650Z",
        "datePublished": "2026-08-28T20:20:53.934Z",
        "dateUpdated": "2026-08-28T20:20:53.934Z"
    },
    "containers": {
        "cna": {
            "title": "PrivateBin: Stored Cross-Side-Scripting (XSS) vulnerability in attachment download link via dangerous MIME types with required user-interaction",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-80",
                            "lang": "en",
                            "description": "CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/PrivateBin/PrivateBin/security/advisories/GHSA-f2xf-7x3g-4272",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/PrivateBin/PrivateBin/security/advisories/GHSA-f2xf-7x3g-4272"
                },
                {
                    "name": "https://github.com/PrivateBin/PrivateBin/commit/7f1f40853efe0eb12db9cc4a30ea8524ac00f423",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/PrivateBin/PrivateBin/commit/7f1f40853efe0eb12db9cc4a30ea8524ac00f423"
                },
                {
                    "name": "https://github.com/PrivateBin/PrivateBin/releases/tag/2.0.5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/PrivateBin/PrivateBin/releases/tag/2.0.5"
                }
            ],
            "affected": [
                {
                    "vendor": "PrivateBin",
                    "product": "PrivateBin",
                    "versions": [
                        {
                            "version": "< 2.0.5",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-28T20:20:53.934Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, AttachmentViewer.setAttachment in js/privatebin.js uses getAttachmentMimeType to accept attacker-controlled MIME types and uses getBlobUrl to create a same-origin blob before setting attachmentLink's href for the Download attachment link. The SVG-only sanitization branch updates only the preview blob, so text/html, image/svg, application/xhtml+xml, and text/xml attachments can remain active in the download blob. On an instance with fileupload = true and a weakened, stripped, or absent Content Security Policy, an anonymous attacker can create such an attachment, and a victim who opens the link in a new tab causes inline JavaScript to execute in the PrivateBin origin. The script can read origin-scoped local storage and issue same-origin requests, including requests to applications co-hosted on the same domain. This issue is fixed in version 2.0.5."
                }
            ],
            "source": {
                "advisory": "GHSA-f2xf-7x3g-4272",
                "discovery": "UNKNOWN"
            }
        }
    }
}