CVE-2026-102633
libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc
CVE-2026-102633 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-102633, released October 10, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.2
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0037
30th percentile
Denial of Service via integer overflow in expat_realloc (bsc#1283493).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| expat · Debian 12.15 (bookworm) | 2.5.0-1+deb12u5 | DEBIAN-CVE-2026-102633 | Oct 10, 2026 |
| expat · Debian 13.5 (trixie) | 2.9.0-1~deb13u1 | DEBIAN-CVE-2026-102633 | Oct 10, 2026 |
| expat · Debian 14 | 2.8.5-2 | DEBIAN-CVE-2026-102633 | Oct 10, 2026 |
| expat · RHEL 10 | 2.7.3-1.el10_2.7 | RHSA-2026:88248 | Oct 24, 2026 |
| expat · RHEL 8 | 0:2.5.0-6.el8_10 | RHSA-2026:92323 | Oct 30, 2026 |
| expat · RHEL 9 | 0:2.5.0-6.el9_8.7 | RHSA-2026:88247 | Oct 24, 2026 |
| expat · almalinux 10 | 2.7.3-1.el10_2.7 | ALSA-2026:88248 | Nov 7, 2026 |
| expat · almalinux 8 | 2.5.0-6.el8_10 | ALSA-2026:92323 | Nov 7, 2026 |
| expat · almalinux 9 | 2.5.0-6.el9_8.7 | ALSA-2026:88247 | Nov 7, 2026 |
| expat · ol 10 | 0:2.7.3-1.el10_2.7 | ELSA-2026-88248 | Nov 7, 2026 |
| expat · ol 8 | 0:2.5.0-6.el8_10 | ELSA-2026-92323 | Nov 7, 2026 |
| expat · ol 9 | 0:2.5.0-6.el9_8.7 | ELSA-2026-88247 | Nov 7, 2026 |
| expat · opensuse-leap 16.0 | 2.8.5-160000.1.1 | OPENSUSE-SU-2026:22177-1 | Nov 7, 2026 |
| expat · rocky 10 | 0:2.7.3-1.el10_2.7 | RLSA-2026:88248 | Nov 7, 2026 |
| expat · rocky 8 | 0:2.5.0-6.el8_10 | RLSA-2026:92323 | Nov 7, 2026 |
| expat · rocky 9 | 0:2.5.0-6.el9_8.7 | RLSA-2026:88247 | Nov 7, 2026 |
| expat · sles 15.6 | 2.8.5-150400.3.40.1 | SUSE-SU-2026:4623-1 | Nov 7, 2026 |
| expat · sles 15.7 | 2.8.5-150700.3.15.1 | SUSE-SU-2026:4619-1 | Nov 7, 2026 |
| expat · sles 16.0 | 2.8.5-160000.1.1 | SUSE-SU-2026:24469-1 | Nov 7, 2026 |
| expat-devel · RHEL 8 | 0:2.5.0-6.el8_10 | RHSA-2026:92323 | Oct 30, 2026 |
| expat-devel · RHEL 9 | 0:2.5.0-6.el9_8.7 | RHSA-2026:88247 | Oct 24, 2026 |
| expat-devel · almalinux 8 | 2.5.0-6.el8_10 | ALSA-2026:92323 | Nov 7, 2026 |
| expat-devel · almalinux 9 | 2.5.0-6.el9_8.7 | ALSA-2026:88247 | Nov 7, 2026 |
| expat-devel · ol 10 | 0:2.7.3-1.el10_2.7 | ELSA-2026-88248 | Nov 7, 2026 |
| expat-devel · ol 8 | 0:2.5.0-6.el8_10 | ELSA-2026-92323 | Nov 7, 2026 |
| expat-devel · ol 9 | 0:2.5.0-6.el9_8.7 | ELSA-2026-88247 | Nov 7, 2026 |
| firefox · amzn 2023 | 140.17.0-1.amzn2023.0.1 | ALAS2023-2026-3214 | Nov 7, 2026 |
| firefox-debuginfo · amzn 2023 | 140.17.0-1.amzn2023.0.1 | ALAS2023-2026-3214 | Nov 7, 2026 |
| firefox-debugsource · amzn 2023 | 140.17.0-1.amzn2023.0.1 | ALAS2023-2026-3214 | Nov 7, 2026 |
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