Cross-Site Scripting (XSS) in apache (CVE-2026-29170)
Summary
Cross-site scripting in apache (CVE-2026-29170). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.4.68 or later.
Original description
The description as published by the source.
A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy configuration.
Users are recommended to upgrade to version 2.4.68, which fixes this issue.
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-2026-29170 has been found in apache.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: upgrade apache to 2.4.68 or later.
If unsure, ask your IT team or search "apache CVE-2026-29170" on the vendor's site.
CVE-2026-29170 (apache) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
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.
Cross-site scripting (XSS) (CWE-79) exists in apache.
Check the vendor advisory for the affected versions of apache.
Severity: Medium (CVSS 6.1/10). 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-2026-29170 apache2 Fixed in: 2.4.68-r0
- BellSoft Alpaquita BELL-CVE-2026-29170 apache2 Fixed in: 2.4.68-r0
- Debian DEBIAN-CVE-2026-29170 apache2
- Ubuntu UBUNTU-CVE-2026-29170 apache2 Fixed in: 2.4.7-1ubuntu4.22+esm15
References
- advisory httpd.apache.org
- advisory openwall.com
- web nvd.nist.gov
- web github.com