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CVE-2023-45803 · cross-distro fix matrix

CVE-2023-45803: urllib3 is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP redirect response using status 301, 302, or 303 after the request had its method changed from one that could accept a request body (like `POST`) to `GET` as is required by

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2023-45803 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • python-urllib3→ fixed in1.26.5-1~exp1+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y python-urllib3

Debian bookworm

Source: Debian Security Tracker

  • python-urllib3→ fixed in1.26.12-1+deb12u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y python-urllib3

Debian trixie

Source: Debian Security Tracker

  • python-urllib3→ fixed in1.26.18-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y python-urllib3

Alpine v3.20

Source: Alpine secdb

  • py3-urllib3→ fixed in1.26.18-r0
    apk update && apk add --upgrade py3-urllib3

Alpine v3.21

Source: Alpine secdb

  • py3-urllib3→ fixed in1.26.18-r0
    apk update && apk add --upgrade py3-urllib3

Alpine edge

Source: Alpine secdb

  • py3-urllib3→ fixed in1.26.18-r0
    apk update && apk add --upgrade py3-urllib3

Alpine v3.18

Source: Alpine secdb

  • py3-urllib3→ fixed in1.26.18-r0
    apk update && apk add --upgrade py3-urllib3

Alpine v3.19

Source: Alpine secdb

  • py3-urllib3→ fixed in1.26.18-r0
    apk update && apk add --upgrade py3-urllib3
Are YOU affected by CVE-2023-45803?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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