Vulnerability · NVD
CVE-2026-15308
HIGH 7.5
The incremental HTML parser (html.parser.HTMLParser) allows for CPU
denial-of-service through repeated unterminated markup declarations when
processing uncontrolled data.
Attack vector : Network
No privileges required
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.64%
exploit very unlikely
percentile 47.2%
Tracked apps referencing this CVE
For each app: the affected range, the fixing version, and where the tracked app stands today.
-
Observed affected builds (1)
Vulnerable CPE configurations (1)
| Vendor | Product | Platform | Versions | CPE 2.3 URI |
|---|---|---|---|---|
| python |
python All platforms (wildcard)
|
All platforms (wildcard) | <3.15.0 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |