specially crafted Unicode input containing long runs of combining characters
with alternating Canonical Combining Class values.
This affects all normalization forms.
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Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 03 Jun 2026 20:30:00 +0000
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Wed, 03 Jun 2026 18:30:00 +0000
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ssvc
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Wed, 03 Jun 2026 16:00:00 +0000
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| Description | unicodedata.normalize() can take excessive CPU time when processing specially crafted Unicode input containing long runs of combining characters with alternating Canonical Combining Class values. This affects all normalization forms. | |
| Title | Potential DoS via quadratic complexity in unicodedata.normalize() | |
| Weaknesses | CWE-407 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: PSF
Published:
Updated: 2026-06-03T19:18:17.828Z
Reserved: 2026-02-26T15:19:46.862Z
Link: CVE-2026-3276
Updated: 2026-06-03T19:18:17.828Z
Status : Received
Published: 2026-06-03T16:16:29.253
Modified: 2026-06-03T20:16:20.200
Link: CVE-2026-3276
No data.
OpenCVE Enrichment
Updated: 2026-06-03T18:00:07Z