{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.15.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "dc31dd7e62c1f8806b663549700a4121537b9530"
            }
          ],
          "repo": "https://github.com/stoatchat/stoatchat",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qv38-hwhv-jm49"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-693"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100676.json"
  },
  "details": "January, the media proxy/embed service of stoatchat (stoatchat/stoatchat), before version 0.15.5 improperly resolves SVG \u003cimage href\u003e values as local filesystem paths when a fetched resource is served as image/svg+xml. An unauthenticated remote attacker who causes the service to proxy an attacker-hosted SVG (e.g. via the /proxy endpoint) can determine whether local files exist through observable response-time differences, and can cause supported local image files to be disclosed after re-encoding. Because each referenced file is read in full with no effective limit on the number or total volume of reads, a single request can also generate an unbounded amount of local filesystem I/O and memory pressure (the published proof of concept drives about 4.34 GB of reads), leading to denial of service. The issue is fixed in 0.15.5.",
  "id": "CVE-2026-100676",
  "modified": "2026-09-29T03:30:21.256851824Z",
  "published": "2026-09-26T13:23:39.014Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100676.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/stoatchat/stoatchat/security/advisories/GHSA-qv38-hwhv-jm49"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100676"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/stoatchat-before-0.15.5-local-filesystem-read-via-svg"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "stoatchat before 0.15.5 Local Filesystem Read via SVG"
}