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CVE-2026-23535
Path Traversal in wlc (CVE-2026-23535)
Summary
path traversal in wlc (CVE-2026-23535). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `1.17.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-23535** has been found in wlc.
Successful exploitation can lead to full system takeover. CVSS score: ?/10.
What to do: upgrade wlc to **1.17.2** or later.
If unsure, ask your IT team or search "wlc CVE-2026-23535" on the vendor's site.
CVE-2026-23535 (wlc) — CWE-22 /
Attack vector: remote (network-reachable)
Patched: `1.17.2` — apply immediately
Workaround: Do not use `wlc download` with untrusted servers.
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
**Path traversal** (CWE-22) exists in wlc.
📍 Affected scope
wlc — .
🔥 Severity
Severity: ?. Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **1.17.2**.
🛡️ Workaround
Workaround: Do not use `wlc download` with untrusted servers.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'wlc' .` 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 'wlc' . | 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 `wlc` 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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5Apply temporary workaround mitigate
Do not use `wlc download` with untrusted servers.パッチが適用されるまでの応急処置として、Do not use `wlc download` with untrusted servers. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade wlc to 1.17.2ステージング環境で 1.17.2 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
PyPI
wlc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.2"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-23535
- advisory https://github.com/advisories/GHSA-mmwx-79f6-67jg
- package https://github.com/WeblateOrg/wlc
- package https://pypi.org/project/wlc
- web https://github.com/WeblateOrg/wlc/security/advisories/GHSA-mmwx-79f6-67jg
- web https://github.com/WeblateOrg/wlc/pull/1128
- web https://github.com/WeblateOrg/wlc/commit/216e691c6e50abae97fe2e4e4f21501bf49a585f
- web https://github.com/WeblateOrg/wlc/releases/tag/1.17.2