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DEBIAN-CVE-2026-34095
Vulnerability in mediawiki (DEBIAN-CVE-2026-34095)
Summary
vulnerability in mediawiki (DEBIAN-CVE-2026-34095). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `1:1.39.17-1+deb12u2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **DEBIAN-CVE-2026-34095** has been found in mediawiki.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade mediawiki to **1:1.39.17-1+deb12u2** or later.
If unsure, ask your IT team or search "mediawiki DEBIAN-CVE-2026-34095" on the vendor's site.
DEBIAN-CVE-2026-34095 (mediawiki) —
Patched: `1:1.39.17-1+deb12u2` — 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.
❓ What is the problem
**A vulnerability** (unclassified) exists in mediawiki.
📍 Affected scope
mediawiki — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **1:1.39.17-1+deb12u2**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'mediawiki' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'mediawiki' . | 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 `mediawiki` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade mediawiki to 1:1.39.17-1+deb12u2ステージング環境で 1:1.39.17-1+deb12u2 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
Debian:11
mediawiki
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:12
mediawiki
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.39.17-1+deb12u2"}]}]
Debian:13
mediawiki
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.43.8+dfsg-1~deb13u1"}]}]
Debian:14
mediawiki
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.43.8+dfsg-2"}]}]