{"schema":"threatline.record/2","record":{"id":"CVE-2026-111687","aliases":[],"summary":"WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint","details":"WeRSS (we-mp-rss) through 1.5.3 contains a remote code execution vulnerability that allows unauthenticated attackers to run code via the template parameter of the public GET /rss/{feed_id} endpoint. Attackers can supply a non-built-in ext value and a {{=expression}} template whose object-subclass traversal bypasses the eval denylist to run OS commands as the service account.","categories":["Unclassified"],"product":"we-mp-rss","vendor":"rachelos","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111687","source_modified_at":"2026-10-16T19:05:43.558Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"we-mp-rss","vendor":"rachelos","versions":[{"version":"0","lessThanOrEqual":"1.5.3","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.01003,"percentile":0.62584,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:39:44.866Z","modified_at":"2026-10-16T19:05:43.558Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111687","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T19:05:43.558Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111687","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rce","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/template_parser.py#L1150-L1166","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.py#L185-L198","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/werss-we-mp-rss-through-1.5.3-rce-via-template-parameter-in-rss-endpoint","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-16T19:04:57.256748Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T19:05:43.558Z","content_hash":"1b2d0d6febafac63cd2bdb9b80287517042de08c860cb10d43e0d1c2f7d965f4"}}