Vulnerability in github.com/l3montree-dev/devguard (CVE-2026-48089)
Summary
Vulnerability in github.com/l3montree-dev/devguard (CVE-2026-48089). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.4.2 or later.
Original description
The description as published by the source.
DevGuard provides vulnerability management for the full software supply chain. Prior to 1.4.2, on a DevGuard API instance with one or more public assets, any authenticated user — including users from a different organization with no membership or role in the affected org/project — can create, update, reapply, and delete VEX rules on those public assets. The same flaw affects the other vulnerability-triage write endpoints exposed under a public asset, including VEX rule create / update / reapply / delete; dependency-vuln event creation (accept / reject / mitigate decisions), batch event creation, vuln sync, and mitigation; license risk creation; external reference writes; and/or artifact creation and license refresh. The attacker needs a valid account on the instance, but no membership in the victim organization, project, or asset is required. Version v1.4.2contains a patch. As a workaround, make affected assets non-public. In the asset settings, switch visibility from public to private. This removes the public-read exemption in the access-control middleware and restores correct authorization on all write endpoints for that asset. Downstream consumers that previously relied on the public vex.json / sbom.json endpoints will need to be granted explicit access or must receive an exported file version until the patched release is deployed.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
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-2026-48089 has been found in github.com/l3montree-dev/devguard.
Risk of unauthorized operations or information disclosure.
What to do: upgrade github.com/l3montree-dev/devguard to 1.4.2 or later.
If unsure, ask your IT team or search "github.com/l3montree-dev/devguard CVE-2026-48089" on the vendor's site.
CVE-2026-48089 (github.com/l3montree-dev/devguard) — CWE-285
Patched: 1.4.2 — 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-285) exists in github.com/l3montree-dev/devguard.
Check the vendor advisory for the affected versions of github.com/l3montree-dev/devguard.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.4.2.
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 'github.com/l3montree-dev/devguard' . 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
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1Identify exposure identify
grep -r 'github.com/l3montree-dev/devguard' . | 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
github.com/l3montree-dev/devguard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 github.com/l3montree-dev/devguard to 1.4.2ステージング環境で 1.4.2 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 github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- web github.com