CVE-2022-23990
expat: Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.
CVE-2022-23990 is fixed in 9 products on 1 platform, first by DEBIAN-CVE-2022-23990, released January 26, 2022. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0469
91st percentile
Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| expat · Debian 12.15 (bookworm) | 2.4.3-3 | DEBIAN-CVE-2022-23990 | Jan 26, 2022 |
| expat · Debian 13.5 (trixie) | 2.4.3-3 | DEBIAN-CVE-2022-23990 | Jan 26, 2022 |
| expat · Debian 14 | 2.4.3-3 | DEBIAN-CVE-2022-23990 | Jan 26, 2022 |
| expat · RHEL 8 | 0:2.5.0-1.el8_10 | RHSA-2025:21776 | Nov 19, 2025 |
| expat · RHEL 9 | 0:2.2.10-12.el9_0 | RHBA-2022:4046 | May 17, 2022 |
| expat · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.4 | expat 2.2.5-3ubuntu0.4 | Feb 14, 2022 |
| expat · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.2 | expat 2.2.9-1ubuntu0.2 | Feb 14, 2022 |
| expat · Ubuntu 24.10 (oracular) | 2.4.3-3 | expat 2.4.3-3 | Jan 16, 2026 |
| expat · Ubuntu 25.04 (plucky) | 2.4.3-3 | expat 2.4.3-3 | Jan 16, 2026 |
| expat · almalinux 8 | 2.5.0-1.el8_10 | ALSA-2025:21776 | Nov 19, 2025 |
| expat · amzn 2023 | 2.5.0-1.amzn2023.0.2 | ALAS2023-2023-058 | Feb 17, 2023 |
| expat · ol 8 | 0:2.2.5-4.0.1.el8_5.3 | ELSA-2022-9232 | Mar 18, 2022 |
| expat-debuginfo · amzn 2023 | 2.5.0-1.amzn2023.0.2 | ALAS2023-2023-058 | Feb 17, 2023 |
| expat-debugsource · amzn 2023 | 2.5.0-1.amzn2023.0.2 | ALAS2023-2023-058 | Feb 17, 2023 |
| expat-devel · RHEL 8 | 0:2.5.0-1.el8_10 | RHSA-2025:21776 | Nov 19, 2025 |
| expat-devel · RHEL 9 | 0:2.2.10-12.el9_0 | RHBA-2022:4046 | May 17, 2022 |
| expat-devel · almalinux 8 | 2.5.0-1.el8_10 | ALSA-2025:21776 | Nov 19, 2025 |
| expat-devel · amzn 2023 | 2.5.0-1.amzn2023.0.2 | ALAS2023-2023-058 | Feb 17, 2023 |
| expat-devel · ol 8 | 0:2.2.5-4.0.1.el8_5.3 | ELSA-2022-9232 | Mar 18, 2022 |
| expat-static · amzn 2023 | 2.5.0-1.amzn2023.0.2 | ALAS2023-2023-058 | Feb 17, 2023 |
| firefox · Ubuntu 22.04.1 LTS (jammy) | 1:1snap1-0ubuntu1 | firefox 1:1snap1-0ubuntu1 | Apr 6, 2022 |
| firefox · Ubuntu 24.10 (oracular) | 1:1snap1-0ubuntu1 | firefox 1:1snap1-0ubuntu1 | Feb 15, 2022 |
| firefox · Ubuntu 25.04 (plucky) | 1:1snap1-0ubuntu1 | firefox 1:1snap1-0ubuntu1 | Feb 15, 2022 |
| libexpat1 · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.4 | libexpat1 2.2.5-3ubuntu0.4 | Feb 14, 2022 |
| libexpat1 · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.2 | libexpat1 2.2.9-1ubuntu0.2 | Feb 14, 2022 |
| libexpat1 · Ubuntu 24.10 (oracular) | 2.4.3-3 | libexpat1 2.4.3-3 | Jan 16, 2026 |
| libexpat1 · Ubuntu 25.04 (plucky) | 2.4.3-3 | libexpat1 2.4.3-3 | Jan 16, 2026 |
| mingw32-expat · RHEL 8 | 0:2.4.8-1.el8 | RHSA-2022:7811 | Nov 8, 2022 |
| mingw32-expat · almalinux 8 | 2.4.8-1.el8 | ALSA-2022:7811 | Nov 8, 2022 |
| mingw64-expat · RHEL 8 | 0:2.4.8-1.el8 | RHSA-2022:7811 | Nov 8, 2022 |
| mingw64-expat · almalinux 8 | 2.4.8-1.el8 | ALSA-2022:7811 | Nov 8, 2022 |
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