Description
Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Python Software Foundation | CPython | < 3.16.0 | 3.16.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | python3.14 | No fix yet | — |
| Ubuntu 26.04 LTS | python3.14 | No fix yet | — |
| Ubuntu 24.04 LTS | python3.12 | No fix yet | — |
| Ubuntu 22.04 LTS | python3.10 | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | python2.7 +1 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | python2.7 +2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | python2.7 +3 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | python2.7 +1 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | python2.7 +2 | No fix yet | — |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | python3 +7 | 3.9.25-16.el9_9 | RLSA-2026:98533 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | python3 +3 | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | python-3.10 +5 | No fix yet | — |
Advisories 2
- RLSA-2026:98533 Moderate: python3.9 security update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-4189 Python: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026