← Back
CVE-2026-50636
high
CVSS 8.8
SQL Injection in limesurvey/limesurvey (CVE-2026-50636)
Summary
SQL injection in limesurvey/limesurvey (CVE-2026-50636). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-50636** has been found in limesurvey/limesurvey.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "limesurvey/limesurvey CVE-2026-50636" on the vendor's site.
CVE-2026-50636 (limesurvey/limesurvey) — CWE-89 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
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
**SQL injection** (CWE-89) exists in limesurvey/limesurvey.
📍 Affected scope
limesurvey/limesurvey — .
🔥 Severity
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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 'limesurvey/limesurvey' .` 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
-
1Identify exposure identify
grep -r 'limesurvey/limesurvey' . | 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 `limesurvey/limesurvey` を grep し、稼働しているサービス・バージョンを把握する。
-
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
composer
limesurvey/limesurvey
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- web https://github.com/LimeSurvey/LimeSurvey/pull/5031
- web [email protected]
- web https://www.vulncheck.com/advisories/limesurvey-remotecontrol-invite-participants-remind-participants-sql-injection
- web https://nvd.nist.gov/vuln/detail/CVE-2026-50636
- web https://www.limesurvey.org
- web https://github.com/advisories/GHSA-pr6f-87hf-hx24
- web https://github.com/LimeSurvey/LimeSurvey/commit/4f383aa0bbe711f0064b319edb19fba759c50a33
- web https://github.com/LimeSurvey/LimeSurvey/commit/98cfee55df97f9c82a72cf352bb204d51e588f7e