StackPatch is liveSee product

Back to CVE digest
CVE-2020-27783 · cross-distro fix matrix

CVE-2020-27783: A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-27783 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • lxml→ fixed in4.6.2-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y lxml

Debian bookworm

Source: Debian Security Tracker

  • lxml→ fixed in4.6.2-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y lxml

Debian trixie

Source: Debian Security Tracker

  • lxml→ fixed in4.6.2-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y lxml

Alpine v3.20

Source: Alpine secdb

  • py3-lxml→ fixed in4.6.2-r0
    apk update && apk add --upgrade py3-lxml

Alpine v3.21

Source: Alpine secdb

  • py3-lxml→ fixed in4.6.2-r0
    apk update && apk add --upgrade py3-lxml

Alpine edge

Source: Alpine secdb

  • py3-lxml→ fixed in4.6.2-r0
    apk update && apk add --upgrade py3-lxml

Alpine v3.18

Source: Alpine secdb

  • py3-lxml→ fixed in4.6.2-r0
    apk update && apk add --upgrade py3-lxml

Alpine v3.19

Source: Alpine secdb

  • py3-lxml→ fixed in4.6.2-r0
    apk update && apk add --upgrade py3-lxml
Are YOU affected by CVE-2020-27783?

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.

curl https://mindsparkstack.com/scan.sh | bash
Form-based quickscan View on NVD
Continuous monitoring beats manual checking

CVE-2020-27783dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)