CVE-2025-6069

The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
PSFCNA
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA-ADPADP
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
jython
bullseye
vulnerable
bookworm
no-dsa
sid
vulnerable
trixie
vulnerable
python2.7
bullseye
vulnerable
bookworm
no-dsa
python3.11
bookworm
vulnerable
bookworm (security)
vulnerable
python3.12
sid
vulnerable
bookworm
no-dsa
python3.13
trixie
vulnerable
bookworm
no-dsa
sid
vulnerable
python3.9
bullseye
vulnerable
bookworm
no-dsa
bullseye (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
jython
plucky
needs-triage
oracular
needs-triage
noble
needs-triage
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
python2.7
plucky
dne
oracular
dne
noble
dne
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
needs-triage
python3.11
plucky
dne
oracular
dne
noble
dne
jammy
needs-triage
python3.12
plucky
dne
oracular
needs-triage
noble
needs-triage
jammy
dne
python3.13
plucky
needs-triage
oracular
needs-triage
noble
dne
jammy
dne
python3.9
plucky
dne
oracular
dne
noble
dne
jammy
dne
focal
needs-triage