Privilege Escalation in signify (CVE-2025-70887)
Summary
Vulnerability in signify (CVE-2025-70887). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 0.9.2 or later.
Original description
The description as published by the source.
An issue in ralphje Signify before v.0.9.2 allows a remote attacker to escalate privileges via the signed_data.py and the context.py components
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-2025-70887 has been found in signify.
Risk of unauthorized operations or information disclosure.
What to do: upgrade signify to 0.9.2 or later.
If unsure, ask your IT team or search "signify CVE-2025-70887" on the vendor's site.
CVE-2025-70887 (signify) — CWE-269
Patched: 0.9.2 — 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 signify.
Check the vendor advisory for the affected versions of signify.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.9.2.
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 'signify' . 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 'signify' . | 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
signify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 signify to 0.9.2ステージング環境で 0.9.2 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 nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- patch github.com
- report github.com
- report github.com
- web github.com