Use-After-Free in apache (CVE-2026-48913)
Summary
Vulnerability in apache (CVE-2026-48913). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.4.68 or later.
Original description
The description as published by the source.
Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted.
This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-48913 has been found in apache.
Risk of unauthorized operations or information disclosure. CVSS score: 7.3/10.
What to do: upgrade apache to 2.4.68 or later.
If unsure, ask your IT team or search "apache CVE-2026-48913" on the vendor's site.
CVE-2026-48913 (apache) — CWE-416 / CVSS v3 7.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 2.4.68 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Use-after-free (CWE-416) exists in apache.
Check the vendor advisory for the affected versions of apache.
Severity: High (CVSS 7.3/10). Risk of unauthorized operations or information disclosure.
Update to 2.4.68.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'apache' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'apache' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
apacheを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade apache to 2.4.68ステージング環境で 2.4.68 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-48913 apache2 Fixed in: 2.4.68-r0
- BellSoft Alpaquita BELL-CVE-2026-48913 apache2 Fixed in: 2.4.68-r0
- Debian DEBIAN-CVE-2026-48913 apache2
- Ubuntu UBUNTU-CVE-2026-48913 apache2
References
- advisory httpd.apache.org
- advisory openwall.com
- JVN JVNDB-2026-026850
- web nvd.nist.gov
- web github.com