This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-18503 →
DEBIAN-CVE-2026-18503
Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applicatio...
Original description
The description as published by the source.
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().
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
pypy3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
pypy3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
pypy3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:12
python3.11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.11.2-6+deb12u9"}]}]
Debian:13
python3.13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
python3.13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.15-1"}]}]
Debian:14
python3.14
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.14.7-1"}]}]
Debian:14
python3.15
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.15.0~rc1-1"}]}]
References
- advisory security-tracker.debian.org