CVE-2026-42528
CVE-2026-42528: 2 tracked advisory records across Apache, Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
1 advisory- Advisory severityMedium4.3
Medium [CVE-2026-42528] 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
CVE-2026-42528Source published Source updated
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 Affected product named by the advisory: Apache HTTP Server.
- Related products — impact not confirmed
- Apache HTTP Server
- Source-reported affected versions
- 2.4.67
- Source-reported fixed versions
- 2.4.69
- Mitigation guidance
- Users are recommended to upgrade to version 2.4.69, which fixes this issue
Red Hat
1 advisory- Advisory severityMedium4.3
Medium [CVE-2026-42528] Denial of Service via mod_dav shared lock memory calculation error
CVE-2026-42528Source published Source updated
Denial of Service via mod_dav shared lock memory calculation error. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-131. Red Hat lists fixing advisory RHSA-2026:74858 with package httpd-main-2.4.69-1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
- Related products — impact not confirmed
- Red Hat Hardened Images
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
3 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- httpd-main-2.4.69-1.hum1
- RHSA-2026:74858
- Mitigation guidance
- If WebDAV functionality is not required, disable the mod_dav module by commenting out the `LoadModule dav_module` line in `/etc/httpd/conf.modules.d/00-dav.conf` or setting `Dav Off` within the relevant configuration contexts. If WebDAV is required, restrict lock capabilities to authenticated and trusted clients by limiting the LOCK method within the configuration (for example, using `<Limit LOCK>` blocks with strict `Require` directives). Apply configuration changes by reloading the service: ``` systemctl reload httpd ``` Warning: Disabling mod_dav or restricting lock operations will prevent WebDAV clients from acquiring shared or exclusive resource locks. Reloading the httpd service may briefly affect active HTTP connections.
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