DEBIAN-CVE-2026-6019

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2026-6019
Published: 22 Apr 2026, 20:16
Last modified:16 Jun 2026, 05:00

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Apr 2026, 20:16
Published
Vulnerability first disclosed
16 Jun 2026, 05:00
Last Modified
Vulnerability information updated

Description

http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Systems

  • debian•pypy3

    all | all | all | all

  • debian•python3.11

    all

  • debian•python3.13

    all | all | < 3.13.5-2+deb13u2 | < 3.13.14-1

  • debian•python3.14

    all | < 3.14.5~rc1-1

  • debian•python3.9

    all

References (1)