{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78381", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-08-24T13:31:59.749Z", "datePublished": "2026-08-24T13:32:55.318Z", "dateUpdated": "2026-08-24T15:19:10.734Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "ransomlook", "repo": "https://github.com/RansomLook/RansomLook/c", "vendor": "ransomlook", "versions": [{"lessThanOrEqual": "2.0.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Jeroen Pinoy"}, {"lang": "en", "type": "remediation developer", "value": "Fafner [_KeyZee_]"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>RansomLook contains a path traversal vulnerability in the handling of the <code>screen</code> field associated with group posts. The <code>GroupPost.get</code> API handler concatenates the database-controlled <code>screen</code> value directly with the application's <code>source/</code> directory and opens the resulting path without verifying that the resolved file remains within the intended directory.</p><p>Because the <code>screen</code> field is free-form and can be populated either through the administrative post editor or through data imported from a remote RansomLook instance, a malicious upstream instance can provide traversal sequences such as <code>../config/generic.json</code>. 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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.0.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ransomlook", "source": "cna", "vendor": "ransomlook"}, "product": "ransomlook", "vendor": "ransomlook"}], "created": "2026-08-24T16:15:04.023206+00:00", "updated": "2026-08-24T17:15:05.458864+00:00", "vendors": ["ransomlook", "ransomlook$PRODUCT$ransomlook"]}