Apache HTTP Server 2.4.71 Fixes Critical HTTP/2 Memory Corruption
Tech GuruQuick Answer
Inventory the loaded Apache modules and exact build, deploy 2.4.71 or the supported distributor fix, and validate HTTP/2, managed certificates and virtual-host routing after restart.
Confirm Scope And Apply The Supported Remediation
What to do now: Record upstream or distributor package identity, loaded modules, enabled protocols, virtual-host configuration, service ownership and public exposure. Map each CVE to its module and version range. Separately installed mod_h2 requires project-specific fixed-release confirmation; do not assume an Apache package update replaces a custom module. Apply Apache HTTP Server 2.4.71 through the approved distribution channel. Verify signatures or checksums for upstream source packages and confirm distributor backport status where the visible version differs. Check the running server and module binaries, reload or restart through the supported process, then test HTTP/2 requests, managed-certificate renewal, virtual-host mapping and representative applications.
Last verified: 2026-11-11 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Apache HTTP Server with mod_http2, mod_md or mod_vhost_alias |
|---|---|
| Advisory | Apache-HTTP-Server-2.4.71 |
| CVEs | CVE-2026-106023, CVE-2026-109163, CVE-2026-119618 |
| Authoritative release date | November 11, 2026; Apache’s published security JSON records the 2.4.71 release timeline at 12:00 UTC. |
| Authority revision date | Initial 2.4.71 security release; no separate material revision is stated. |
| Affected versions | CVE-2026-119618 affects Apache HTTP Server 2.4.55–2.4.70 through mod_http2, with separately distributed GitHub mod_h2 2.0.8–2.0.42 also listed. CVE-2026-106023 affects mod_md in 2.4.30–2.4.70. CVE-2026-109163 affects mod_vhost_alias in 2.4.69 and 2.4.70. |
| Fixed version | Apache HTTP Server 2.4.71; distribution users should verify their vendor’s supported fixed package |
| CVSS base score | Not provided by the authority |
| CVSS severity | Critical (mod_http2); Important (mod_md); Low (mod_vhost_alias), as rated by Apache |
| Exploitation status | Apache does not state malicious exploitation in these release advisories.; no exploitation claim is inferred. |
What Changed
Apache releases 2.4.71 with three security fixes: an HTTP/2 shared-resource synchronization flaw that can lead to remote code execution, a mod_md request-processing crash, and a one-byte mod_vhost_alias stack overwrite.
What To Validate Now
- Inventory. Record upstream or distributor package identity, loaded modules, enabled protocols, virtual-host configuration, service ownership and public exposure.
- Establish applicability. Map each CVE to its module and version range. Separately installed mod_h2 requires project-specific fixed-release confirmation; do not assume an Apache package update replaces a custom module.
- Remediate. Apply Apache HTTP Server 2.4.71 through the approved distribution channel. Verify signatures or checksums for upstream source packages and confirm distributor backport status where the visible version differs.
- Validate. Check the running server and module binaries, reload or restart through the supported process, then test HTTP/2 requests, managed-certificate renewal, virtual-host mapping and representative applications.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Keep configuration and module backups and a tested rollback path. Preserve request and crash logs. Do not infer active exploitation from Apache’s Critical rating or claim a fixed standalone mod_h2 version that the cited release does not specify.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
