{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115878", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-23T19:37:27.176Z", "datePublished": "2026-11-03T20:26:02.220Z", "dateUpdated": "2026-11-03T20:26:02.220Z"}, "containers": {"cna": {"title": "Stanza: RCE via pickle deserialization in the lemmatizer", "problemTypes": [{"descriptions": [{"cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-502", "lang": "en", "description": "CWE-502: Deserialization of Untrusted Data", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/stanfordnlp/stanza/security/advisories/GHSA-gh9r-c94j-cmp5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/stanfordnlp/stanza/security/advisories/GHSA-gh9r-c94j-cmp5"}, {"name": "https://github.com/stanfordnlp/stanza/pull/1649", "tags": ["x_refsource_MISC"], "url": "https://github.com/stanfordnlp/stanza/pull/1649"}, {"name": "https://github.com/stanfordnlp/stanza/commit/b21e1c9b47b4fccff21d3b0a6c0687a19410c2f0", "tags": ["x_refsource_MISC"], "url": "https://github.com/stanfordnlp/stanza/commit/b21e1c9b47b4fccff21d3b0a6c0687a19410c2f0"}, {"name": "https://github.com/stanfordnlp/stanza/releases/tag/v1.15.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/stanfordnlp/stanza/releases/tag/v1.15.0"}], "affected": [{"vendor": "stanfordnlp", "product": "stanza", "versions": [{"version": "= 1.14.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-03T20:26:02.220Z"}, "descriptions": [{"lang": "en", "value": "Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. From 1.14.0 until 1.15.0, loading an attacker-supplied lemmatizer checkpoint can execute arbitrary code because stanza/models/lemma/trainer.py stores pos_dict as gzip-compressed pickle bytes and Trainer.load passes the decompressed stream to unrestricted pickle.loads. The outer torch.load call uses weights_only=True, but the nested bytes are treated as a primitive and are not inspected by that allowlist. The path is reachable during pipeline construction through a caller-influenced lemma_model_path, before inference begins. This issue is fixed in version 1.15.0."}], "source": {"advisory": "GHSA-gh9r-c94j-cmp5", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "stanza", "vendor": "stanfordnlp", "versions": [{"status": "affected", "version": "= 1.14.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. From 1.14.0 until 1.15.0, loading an attacker-supplied lemmatizer checkpoint can execute arbitrary code because stanza/models/lemma/trainer.py stores pos_dict as gzip-compressed pickle bytes and Trainer.load passes the decompressed stream to unrestricted pickle.loads. The outer torch.load call uses weights_only=True, but the nested bytes are treated as a primitive and are not inspected by that allowlist. The path is reachable during pipeline construction through a caller-influenced lemma_model_path, before inference begins. This issue is fixed in version 1.15.0."}], "id": "CVE-2026-115878", "lastModified": "2026-11-03T21:17:02.377", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-03T21:17:02.377", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/stanfordnlp/stanza/commit/b21e1c9b47b4fccff21d3b0a6c0687a19410c2f0"}, {"source": "security-advisories@github.com", "url": "https://github.com/stanfordnlp/stanza/pull/1649"}, {"source": "security-advisories@github.com", "url": "https://github.com/stanfordnlp/stanza/releases/tag/v1.15.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/stanfordnlp/stanza/security/advisories/GHSA-gh9r-c94j-cmp5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-502"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}