{"id":"CVE-2026-100676","revision":"d0760c8c485c45099b77fbef053b6cee","records":[{"revision":"d0760c8c485c45099b77fbef053b6cee","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-100676","aliases":[],"title":"stoatchat before 0.15.5 Local Filesystem Read via SVG","description":"January, the media proxy/embed service of stoatchat (stoatchat/stoatchat), before version 0.15.5 improperly resolves SVG <image href> 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.","state":0,"publishedAt":"2026-09-26T13:23:39.014+00:00","modifiedAt":"2026-09-28T16:33:08.727+00:00","affected":[{"ecosystem":"Vendor product","name":"stoatchat","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"stoatchat\",\n                    \"product\": \"stoatchat\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"0.15.5\"\n                        },\n                        {\n                            \"version\": \"0.15.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":8.8,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","score":8.2,"severity":"HIGH"}],"references":["https://github.com/stoatchat/stoatchat/security/advisories/GHSA-qv38-hwhv-jm49","https://www.vulncheck.com/advisories/stoatchat-before-0.15.5-local-filesystem-read-via-svg"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-100676","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-100676","identifiers":["CVE-2026-100676"]},"retained":false,"historicalAffected":[]}],"coverage":[]}