Privilege Escalation in october/backend (CVE-2020-15248)
Summary
Vulnerability in october/backend (CVE-2020-15248). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.0.470 or later.
Original description
The description as published by the source.
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.470, backend users with the default "Publisher" system role have access to create & manage users where they can choose which role the new user has. This means that a user with "Publisher" access has the ability to escalate their access to "Developer" access. Issue has been patched in Build 470 (v1.0.470) & v1.1.1.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
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-2020-15248 has been found in october/backend.
Risk of unauthorized operations or information disclosure.
What to do: upgrade october/backend to 1.0.470 or later.
If unsure, ask your IT team or search "october/backend CVE-2020-15248" on the vendor's site.
CVE-2020-15248 (october/backend) — CWE-269
Attack vector: local / no user interaction
Patched: 1.0.470 — 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.
A vulnerability (CWE-269) exists in october/backend.
Check the vendor advisory for the affected versions of october/backend.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.0.470.
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 'october/backend' . 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
-
1Identify exposure identify
grep -r 'october/backend' . | 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
october/backend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 october/backend to 1.0.470ステージング環境で 1.0.470 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
References
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- web github.com