CVE-2026-42528
Apache HTTP Server: mod_dav shared lock overflow
CVE-2026-42528 is fixed in 29 products on 1 platform, first by FEDORA-2026-D3CEC01BDE, released October 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
4.3
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile
A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version 2.4.69, which fixes this issue
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| apache2 · Debian 13.5 (trixie) | 2.4.69-1~deb13u1 | DEBIAN-CVE-2026-42528 | Oct 5, 2026 |
| apache2 · Debian 14 | 2.4.69-1 | DEBIAN-CVE-2026-42528 | Oct 5, 2026 |
| apache2 · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2 · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-devel · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2-devel · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-event · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-manual · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2-manual · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-prefork · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2-prefork · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-utils · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2-utils · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| apache2-worker · sles 15.6 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 | Nov 7, 2026 |
| apache2-worker · sles 15.7 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 | Nov 7, 2026 |
| httpd · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-core · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-core · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-core-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-core-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-debugsource · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-debugsource · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-devel · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-devel · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-filesystem · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-filesystem · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-manual · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-manual · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-tools · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-tools · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| httpd-tools-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| httpd-tools-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_http2 · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_http2-debuginfo · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_ldap · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_ldap · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_ldap-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_ldap-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_lua · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_lua · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_lua-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_lua-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_proxy_html · Fedora 43 | 1:2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_proxy_html · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_proxy_html-debuginfo · Fedora 43 | 1:2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_proxy_html-debuginfo · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_session · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_session · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_session-debuginfo · Fedora 43 | 2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_session-debuginfo · amzn 2023 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_ssl · Fedora 43 | 1:2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_ssl · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
| mod_ssl-debuginfo · Fedora 43 | 1:2.4.69-1.fc43 | FEDORA-2026-D3CEC01BDE | Oct 5, 2026 |
| mod_ssl-debuginfo · amzn 2023 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 | Nov 7, 2026 |
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