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Vulnerability details: VCID-3gc6-hf7m-qbfn
Vulnerability ID VCID-3gc6-hf7m-qbfn
Aliases CVE-2025-6638
GHSA-59p9-h35m-wg4g
Summary transformers: Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1333 Inefficient Regular Expression Complexity
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6638.json
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-6638
cvssv3.1 5.3 https://github.com/huggingface/transformers
generic_textual MODERATE https://github.com/huggingface/transformers
cvssv3 5.3 https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
cvssv3.1 5.3 https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
generic_textual MODERATE https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
ssvc Track https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
cvssv3.1 5.3 https://github.com/huggingface/transformers/commit/d37f7517972f67e3f2194c000ed0f87f064e5099
generic_textual MODERATE https://github.com/huggingface/transformers/commit/d37f7517972f67e3f2194c000ed0f87f064e5099
cvssv3 5.3 https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
cvssv3.1 5.3 https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
generic_textual MODERATE https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
ssvc Track https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2025-6638
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2025-6638
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6638.json
https://api.first.org/data/v1/epss?cve=CVE-2025-6638
https://github.com/huggingface/transformers
https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
https://github.com/huggingface/transformers/commit/d37f7517972f67e3f2194c000ed0f87f064e5099
https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
https://nvd.nist.gov/vuln/detail/CVE-2025-6638
2394799 https://bugzilla.redhat.com/show_bug.cgi?id=2394799
GHSA-59p9-h35m-wg4g https://github.com/advisories/GHSA-59p9-h35m-wg4g
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6638.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://github.com/huggingface/transformers
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-09-12T11:52:42Z/ Found at https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://github.com/huggingface/transformers/commit/d37f7517972f67e3f2194c000ed0f87f064e5099
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-09-12T11:52:42Z/ Found at https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://nvd.nist.gov/vuln/detail/CVE-2025-6638
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Exploit Prediction Scoring System (EPSS)
Percentile 0.11829
EPSS Score 0.00038
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:40:11.668181+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6638.json 38.6.0