119 lines
5.1 KiB
JSON
119 lines
5.1 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-9856",
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"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
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"state": "PUBLISHED",
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"assignerShortName": "@huntr_ai",
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"dateReserved": "2026-05-28T15:41:24.076Z",
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"datePublished": "2026-08-02T15:10:53.809Z",
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"dateUpdated": "2026-08-03T14:57:43.370Z"
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},
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"containers": {
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"cna": {
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"title": "Path Traversal in huggingface/transformers",
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"providerMetadata": {
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"orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
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"shortName": "@huntr_ai",
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"dateUpdated": "2026-08-02T15:10:53.809Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "A vulnerability in huggingface/transformers versions <=5.8.0.dev0 allows an attacker to perform arbitrary file writes via path traversal. The issue resides in the `save_pretrained()` methods of `PreTrainedTokenizerBase` and `ProcessorMixin`, where keys from the `chat_template` dictionary are used directly as filenames without proper validation. An attacker can exploit this by publishing a malicious Hugging Face Hub repository with a crafted `tokenizer_config.json` file. When a victim downloads and saves the tokenizer or processor, the attacker-controlled keys can escape the intended save directory, enabling arbitrary file writes with attacker-controlled content. This vulnerability affects multiple processors inheriting from `ProcessorMixin`, including Idefics, Florence, Gemma, Phi, and Qwen-VL."
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}
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],
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"affected": [
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{
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"vendor": "huggingface",
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"product": "huggingface/transformers",
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"versions": [
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{
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"version": "unspecified",
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"lessThan": "5.10.0",
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"status": "affected",
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"versionType": "custom"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://huntr.com/bounties/362824d5-fe18-40e8-a6cf-62277f97a170"
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},
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{
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"url": "https://github.com/huggingface/transformers/commit/eaaaf8494dd5386634ae37d1d122212fdc315be5"
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}
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],
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"metrics": [
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{
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"cvssV3_0": {
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"version": "3.0",
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"lang": "en",
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"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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"cweId": "CWE-22"
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}
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]
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}
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],
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"source": {
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"advisory": "362824d5-fe18-40e8-a6cf-62277f97a170",
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"discovery": "EXTERNAL"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-03T14:57:31.978427Z",
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"id": "CVE-2026-9856",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-03T14:57:43.370Z"
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}
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}
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]
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}
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} |