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Vulnerability details: VCID-dnej-1umy-qfh4
Vulnerability ID VCID-dnej-1umy-qfh4
Aliases CVE-2025-3263
GHSA-q2wp-rjmx-x6x9
Summary A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_configuration_file()` function within the `transformers.configuration_utils` module. The affected version is 4.49.0, and the issue is resolved in version 4.51.0. The vulnerability arises from the use of a regular expression pattern `config\.(.*)\.json` that can be exploited to cause excessive CPU consumption through crafted input strings, leading to catastrophic backtracking. This can result in model serving disruption, resource exhaustion, and increased latency in applications using the library.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
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-2025-3263.json
epss 0.00096 https://api.first.org/data/v1/epss?cve=CVE-2025-3263
epss 0.00096 https://api.first.org/data/v1/epss?cve=CVE-2025-3263
epss 0.00096 https://api.first.org/data/v1/epss?cve=CVE-2025-3263
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/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
cvssv3.1 5.3 https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
generic_textual MODERATE https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
ssvc Track https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
cvssv3.1 5.3 https://github.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca
generic_textual MODERATE https://github.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca
cvssv3 5.3 https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
cvssv3.1 5.3 https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
generic_textual MODERATE https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
ssvc Track https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2025-3263
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2025-3263
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-3263.json
https://api.first.org/data/v1/epss?cve=CVE-2025-3263
https://github.com/huggingface/transformers
https://github.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca
https://nvd.nist.gov/vuln/detail/CVE-2025-3263
0720e206c6ba28887e4d60ef60a6a089f6c1cc76 https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
2376773 https://bugzilla.redhat.com/show_bug.cgi?id=2376773
c7a69150-54f8-4e81-8094-791e7a2a0f29 https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
GHSA-q2wp-rjmx-x6x9 https://github.com/advisories/GHSA-q2wp-rjmx-x6x9
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-2025-3263.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/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
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/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
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/2025-07-07T14:49:04Z/ Found at https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
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/126abe3461762e5fc180e7e614391d1b4ab051ca
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/c7a69150-54f8-4e81-8094-791e7a2a0f29
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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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/c7a69150-54f8-4e81-8094-791e7a2a0f29
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

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Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-07-07T14:49:04Z/ Found at https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
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-2025-3263
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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Exploit Prediction Scoring System (EPSS)
Percentile 0.2653
EPSS Score 0.00096
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T17:18:24.171853+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2025/3xxx/CVE-2025-3263.json 38.6.0