CVE-2025-3263

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
35.2%
KEV
Not listed

Published

July 7, 2025

Last Modified

August 7, 2025

References (2)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
transformers0.1 ... 4.9.2 (175 versions)4.51.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:53 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-22 14:07 UTCEPSS rescore
  4. 2026-07-21 15:24 UTCEPSS rescore
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  1. 2026-07-06 20:04 UTCOSV refresh
  2. 2026-07-06 16:27 UTCEPSS rescore
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  19. 2026-06-25 13:49 UTCEPSS rescore
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  25. 2026-06-22 14:25 UTCEPSS rescore
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  31. 2026-06-19 19:25 UTCEPSS rescore
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  33. 2026-06-18 17:52 UTCEPSS rescore
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  35. 2026-06-18 08:14 UTCOSV refresh
  36. 2026-06-17 17:52 UTCEPSS rescore
  37. 2026-06-16 17:52 UTCEPSS rescore
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  39. 2026-06-14 23:17 UTCEPSS rescore
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  43. 2026-06-10 22:18 UTCEPSS rescore
  44. 2026-06-10 13:22 UTCEPSS rescore
  45. 2026-06-08 14:16 UTCEPSS rescore
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  47. 2026-06-07 15:24 UTCEPSS rescore
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  50. 2026-06-05 22:46 UTCEPSS rescore
  51. 2026-06-05 22:46 UTCEPSS rescore
  52. 2026-06-05 06:10 UTCEPSS rescore
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  54. 2026-06-04 13:12 UTCEPSS rescore
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  57. 2026-06-01 13:51 UTCEPSS rescore
  58. 2026-06-01 13:51 UTCEPSS rescore
  59. 2026-05-31 00:16 UTCEPSS rescore
  60. 2026-05-30 02:32 UTCEG score recompute
  61. 2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-3263?
CVE-2025-3263 is a medium vulnerability published on July 7, 2025. A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the getconfigurationfile() function within the transformers.configuration_utils module. The affected version is 4.49.0, and the issue is resolved in version 4.51.0.…
When was CVE-2025-3263 disclosed?
CVE-2025-3263 was first published in the National Vulnerability Database on July 7, 2025, with the most recent update on August 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-3263 actively exploited?
CVE-2025-3263 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-3263?
CVE-2025-3263 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2025-3263?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-3263, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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