Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-6019: 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.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | python-unversioned-command | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3 | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-debug | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-devel | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-idle | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-libs | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-test | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3-tkinter | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3.9-debuginfo | 0:3.9.25-1.amzn2023.0.6 |
| Amazon Linux · 2023 | python3.9-debugsource | 0:3.9.25-1.amzn2023.0.6 |
Vulnerabilities 1
-
Low 2.1
BaseCookie.js_output() does not neutralize embedded characters
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 …
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-6019.html