# CVE-2020-18032: graphviz: Graphviz is open-source graph-visualization software CVE-2020-18032 is fixed in 21 products on 1 platform, first by graphviz 2.40.1-2ubuntu0.1~esm1, released April 29, 2021. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2020-18032 - Priority: High - CVSS: 7.8 (Moderate) - EPSS: 0.0261 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 29, 2021 ## Description Graphviz is open-source graph-visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains. Security Fix(es): * graphviz: off-by-one in parse_reclbl() in lib/common/shapes.c (CVE-2020-18032) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | graphviz RHEL 8 | 0:2.40.1-43.el8 | [RHSA-2021:4256](https://patchblox.com/security/data/fix/linux/rhsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [graphviz 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-graphviz-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | graphviz Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [graphviz 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-graphviz-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | graphviz almalinux 8 | 2.40.1-43.el8 | [ALSA-2021:4256](https://patchblox.com/security/data/fix/linux/alsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz ol 8 | 0:2.40.1-43.el8 | [ELSA-2021-4256](https://patchblox.com/security/data/fix/linux/elsa-2021-4256.md) | Nov 16, 2021 | | Linux | graphviz rocky 8 | 0:2.40.1-43.el8 | [RLSA-2021:4256](https://patchblox.com/security/data/fix/linux/rlsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-devel RHEL 8 | 0:2.40.1-43.el8 | [RHSA-2021:4256](https://patchblox.com/security/data/fix/linux/rhsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-devel almalinux 8 | 2.40.1-43.el8 | [ALSA-2021:4256](https://patchblox.com/security/data/fix/linux/alsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-devel ol 8 | 0:2.40.1-43.el8 | [ELSA-2021-4256](https://patchblox.com/security/data/fix/linux/elsa-2021-4256.md) | Nov 16, 2021 | | Linux | graphviz-doc RHEL 8 | 0:2.40.1-43.el8 | [RHSA-2021:4256](https://patchblox.com/security/data/fix/linux/rhsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-doc almalinux 8 | 2.40.1-43.el8 | [ALSA-2021:4256](https://patchblox.com/security/data/fix/linux/alsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-doc ol 8 | 0:2.40.1-43.el8 | [ELSA-2021-4256](https://patchblox.com/security/data/fix/linux/elsa-2021-4256.md) | Nov 16, 2021 | | Linux | graphviz-gd RHEL 8 | 0:2.40.1-43.el8 | [RHSA-2021:4256](https://patchblox.com/security/data/fix/linux/rhsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-gd almalinux 8 | 2.40.1-43.el8 | [ALSA-2021:4256](https://patchblox.com/security/data/fix/linux/alsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-gd ol 8 | 0:2.40.1-43.el8 | [ELSA-2021-4256](https://patchblox.com/security/data/fix/linux/elsa-2021-4256.md) | Nov 16, 2021 | | Linux | graphviz-python3 RHEL 8 | 0:2.40.1-43.el8 | [RHSA-2021:4256](https://patchblox.com/security/data/fix/linux/rhsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-python3 almalinux 8 | 2.40.1-43.el8 | [ALSA-2021:4256](https://patchblox.com/security/data/fix/linux/alsa-2021-4256.md) | Nov 9, 2021 | | Linux | graphviz-python3 ol 8 | 0:2.40.1-43.el8 | [ELSA-2021-4256](https://patchblox.com/security/data/fix/linux/elsa-2021-4256.md) | Nov 16, 2021 | | Linux | libcdt5 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libcdt5 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcdt5-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libcdt5 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libcdt5 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcdt5-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libcgraph6 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libcgraph6 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcgraph6-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libcgraph6 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libcgraph6 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcgraph6-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-guile Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-guile 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-guile-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-guile Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-guile 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-guile-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-lua Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-lua 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-lua-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-lua Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-lua 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-lua-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-perl Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-perl 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-perl-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-perl Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-perl 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-perl-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-php7 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-php7 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-php7-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-php7 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-php7 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-php7-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-ruby Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-ruby 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-ruby-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-ruby Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-ruby 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-ruby-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-tcl Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-tcl 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-tcl-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgv-tcl Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgv-tcl 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgv-tcl-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvc6 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvc6 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvc6-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvc6 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgvc6 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgvc6-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvc6-plugins-gtk Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvc6-plugins-gtk 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvc6-plugins-gtk-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvc6-plugins-gtk Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgvc6-plugins-gtk 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgvc6-plugins-gtk-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvpr2 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvpr2 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvpr2-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libgvpr2 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libgvpr2 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgvpr2-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | liblab-gamut1 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [liblab-gamut1 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-liblab-gamut1-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | liblab-gamut1 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [liblab-gamut1 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-liblab-gamut1-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libpathplan4 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libpathplan4 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpathplan4-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libpathplan4 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libpathplan4 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpathplan4-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libxdot4 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libxdot4 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxdot4-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | libxdot4 Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [libxdot4 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libxdot4-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | python-gv Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [python-gv 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-gv-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | python3-gv Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [python3-gv 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-gv-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 | | Linux | python3-gv Ubuntu 20.04 LTS (focal) | 2.42.2-3ubuntu0.1~esm1 | [python3-gv 2.42.2-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-gv-2.42.2-3ubuntu0.1-esm1.md) | Apr 29, 2021 | --- Data as of 2026-11-08T06:59:42Z UTC. 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