libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mingw32-expatUpgrade mingw64-expatUpgrade mingw32-fontconfigUpgrade python3.12-rpm-macrosUpgrade python3.12-debugUpgrade python3.12-libsUpgrade python3.12Upgrade python3.12-tkinterUpgrade mingw64-fontconfigUpgrade python3.12-develUpgrade expatUpgrade python3.12-idleUpgrade expat-develUpgrade python3.12-test | Nov 21, 2025 | Nov 19, 2025 |
| Alpine Linux | — | Upgrade expat | Sep 22, 2025 | Sep 15, 2025 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade expat-staticUpgrade xmlrpc-c-client-debuginfoUpgrade xmlrpc-c-c++-debuginfoUpgrade expat-debugsourceUpgrade xmlrpc-c-appsUpgrade expatUpgrade xmlrpc-cUpgrade xmlrpc-c-client++-debuginfoUpgrade firefox-debugsourceUpgrade xmlrpc-c-clientUpgrade expat-develUpgrade firefoxUpgrade xmlrpc-c-debuginfoUpgrade xmlrpc-c-apps-debuginfoUpgrade firefox-debuginfoUpgrade xmlrpc-c-c++Upgrade xmlrpc-c-client++Upgrade expat-debuginfo | Sep 30, 2025 | Sep 15, 2025 |
| Apple Osx Libexpat | — | Upgrade macOS to the latest version | Feb 12, 2026 | Feb 11, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esrUpgrade expat | Mar 30, 2026 | Mar 30, 2026 |
| Freebsd | — | Upgrade expat2 | Dec 10, 2025 | Sep 17, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade expat | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade expat | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade expat | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade expat | Dec 12, 2025 | Dec 11, 2025 |
| Ibm Aix | — | Apply the fix or workaround for python_advisory17 | Nov 20, 2025 | Nov 19, 2025 |
| Ibm Http_server | — | Apply IBM HTTP Server Interim Fix PH68462Apply IBM HTTP Server version 8.5.5.29 or laterApply IBM HTTP Server version 9.0.5.27 or later | Mar 25, 2026 | Dec 15, 2025 |
| Mfsa2026 20 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 149.0 | Mar 27, 2026 | Mar 24, 2026 |
| Mfsa2026 22 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.9 | Mar 27, 2026 | Mar 24, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.9 | Mar 27, 2026 | Mar 24, 2026 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Feb 13, 2026 |
| Oracle_linux | — | Upgrade python3.12-libsUpgrade python3.12-develUpgrade mingw32-fontconfigUpgrade mingw32-expatUpgrade expatUpgrade python3.12-debugUpgrade python3.12-testUpgrade python3.12-rpm-macrosUpgrade expat-develUpgrade python3.12-tkinterUpgrade python3.12Upgrade mingw64-expatUpgrade python3.12-idleUpgrade mingw64-fontconfig | Nov 4, 2025 | Sep 15, 2025 |
| Redhat Openshift | — | Upgrade rhcos | Aug 10, 2026 | Sep 15, 2025 |
| Redhat_linux | — | Upgrade python3-idleUpgrade mingw32-fontconfig-debuginfoUpgrade mingw32-expatUpgrade python3.12-debugsourceUpgrade python3.12-testUpgrade python3.12-rpm-macrosUpgrade python-unversioned-commandUpgrade python3-libsUpgrade expat-debuginfoUpgrade python3.12-develUpgrade mingw32-expat-debuginfoUpgrade mingw64-fontconfig-debuginfoUpgrade python3.12-idleUpgrade expat-develUpgrade python3-develUpgrade expat-debugsourceUpgrade mingw64-expat-debuginfoUpgrade python3.12-libsUpgrade python3Upgrade python3-tkinterUpgrade python3-testUpgrade mingw32-fontconfigUpgrade python3.12-debugUpgrade mingw64-expatUpgrade python3-debugUpgrade python3.12Upgrade python3.12-debuginfoNo solution existsUpgrade mingw64-fontconfigUpgrade expatUpgrade python3.12-tkinter | Nov 21, 2025 | Sep 15, 2025 |
| Rocky_linux | — | Upgrade expat-debuginfoUpgrade python3.12-tkinterUpgrade python3.12-develUpgrade expat-debugsourceUpgrade python3.12-debugsourceUpgrade python3.12-idleUpgrade expat-develUpgrade python3-testUpgrade python3.12Upgrade python3-develUpgrade python3Upgrade python3.12-debuginfoUpgrade python3-idleUpgrade python3-debugUpgrade python3-tkinterUpgrade python3.12-libsUpgrade python3.12-testUpgrade expatUpgrade python3.12-debugUpgrade python3-libs | Feb 5, 2026 | Nov 28, 2025 |
| Suse | — | Upgrade libexpat-develUpgrade expatUpgrade libexpat-devel-32bitUpgrade libexpat1-32bitUpgrade libexpat1 | Dec 5, 2025 | Oct 9, 2025 |
| Ubuntu | — | Upgrade libexpat1Upgrade expat | Feb 12, 2026 | Sep 15, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Sep 15, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub