CVE-2026-18503

LOW
INFO Priority: 0.00 BB Relevance: 20/100
Published: 2026-08-10 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: Passive
S: X
AT: None
VC: None
VI: None
VA: Low

Description

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().

Weakness Classification (1)

Bug Bounty Relevance

20 / 100
✓ Low complexity

CVSS Score

2.4 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.12%
Raw Score 0.001190
Percentile 1.8%
Date 2026-10-30

EPSS Trend

2026-10-30
0.00119
2026-10-29
0.00119
2026-10-28
0.00119

Intelligence Sources

nvd ref →