{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-111687", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-16T14:31:19.910Z", "datePublished": "2026-10-16T17:39:44.866Z", "dateUpdated": "2026-10-16T19:05:43.558Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-16T17:39:44.866Z" }, "datePublic": "2026-10-15T00:00:00.000Z", "title": "WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint", "descriptions": [ { "lang": "en", "value": "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." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')", "cweId": "CWE-95", "type": "CWE" } ] } ], "affected": [ { "vendor": "rachelos", "product": "we-mp-rss", "defaultStatus": "unaffected", "versions": [ { "version": "0", "lessThanOrEqual": "1.5.3", "status": "affected", "versionType": "custom" } ], "packageURL": "pkg:github/rachelos/we-mp-rss", "repo": "https://github.com/rachelos/we-mp-rss" } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL" } } ], "references": [ { "url": "https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rce", "tags": [ "third-party-advisory" ] }, { "url": "https://github.com/rachelos/we-mp-rss/blob/v1.5.3/core/lax/template_parser.py#L1150-L1166", "tags": [ "technical-description" ] }, { "url": "https://github.com/rachelos/we-mp-rss/blob/v1.5.3/apis/rss.py#L185-L198", "tags": [ "technical-description" ] }, { "name": "VulnCheck Advisory: WeRSS (we-mp-rss) through 1.5.3 RCE via template Parameter in /rss Endpoint", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/werss-we-mp-rss-through-1.5.3-rce-via-template-parameter-in-rss-endpoint" } ], "credits": [ { "lang": "en", "value": "hieuPenguinnn", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://hackmd.io/@hieuPenguinnn/werss-rss-template-unauth-ssti-rce", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-16T19:04:57.256748Z", "id": "CVE-2026-111687", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "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": "2026-10-16T19:05:43.558Z" } } ] } }