{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-48822",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-22T20:57:10.977Z",
        "datePublished": "2026-06-17T19:59:34.277Z",
        "dateUpdated": "2026-06-18T15:42:42.133Z"
    },
    "containers": {
        "cna": {
            "title": "Shaarli has Stored Cross-Site Scripting (XSS) via Markdown Reference Links",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.8,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/shaarli/Shaarli/security/advisories/GHSA-2hgr-63wv-x462",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/shaarli/Shaarli/security/advisories/GHSA-2hgr-63wv-x462"
                },
                {
                    "name": "https://github.com/shaarli/Shaarli/releases/tag/v0.16.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shaarli/Shaarli/releases/tag/v0.16.2"
                }
            ],
            "affected": [
                {
                    "vendor": "shaarli",
                    "product": "Shaarli",
                    "versions": [
                        {
                            "version": "< 0.16.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-06-17T19:59:34.277Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting (XSS) vulnerability in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside a Markdown link. The vulnerability originates in the filterProtocols method within BookmarkMarkdownFormatter.php.This method attempts to sanitize Markdown links by filtering dangerous protocols (such as javascript:) before rendering. It uses the following regular expression: (#]\\((.*?)\\)#is). This regex is designed to detect inline Markdown links, but it fails to detect Markdown reference-style links because reference-style links are resolved by the Markdown parser after preprocessing. The filterProtocols method never inspects the actual URL used in these references and as a result, an attacker can supply a javascript: URI inside a reference definition. This issue has been fixed in version 0.16.2."
                }
            ],
            "source": {
                "advisory": "GHSA-2hgr-63wv-x462",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/shaarli/Shaarli/security/advisories/GHSA-2hgr-63wv-x462",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-18T15:35:27.903553Z",
                                "id": "CVE-2026-48822",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-18T15:42:42.133Z"
                }
            }
        ]
    }
}