CVE-2026-18503
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()
Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
CPython
- Vendor
- Python Software Foundation
- Product
- CPython
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | python | 3.10.21 | Unavailable | None listed |
| 3.11.0 | affected | python | 3.11.16 | Unavailable | None listed |
| 3.12.0 | affected | python | 3.12.14 | Unavailable | None listed |
| 3.13.0 | affected | python | 3.13.15 | Unavailable | None listed |
| 3.14.0 | affected | python | 3.14.7 | Unavailable | None listed |
| 3.15.0a1 | affected | python | 3.15.0rc1 | Unavailable | None listed |
| 3.16.0a1 | affected | python | 3.16.0 | Unavailable | None listed |