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CVE-2026-48921
high
CVSS 7.5
Vulnerability in io.jenkins.plugins:pipeline-groovy-lib (CVE-2026-48921)
Summary
vulnerability in io.jenkins.plugins:pipeline-groovy-lib (CVE-2026-48921). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `798.v5cc688825312` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-48921** has been found in io.jenkins.plugins:pipeline-groovy-lib.
Successful exploitation can lead to full system takeover. CVSS score: 7.5/10.
What to do: upgrade io.jenkins.plugins:pipeline-groovy-lib to **798.v5cc688825312** or later.
If unsure, ask your IT team or search "io.jenkins.plugins:pipeline-groovy-lib CVE-2026-48921" on the vendor's site.
CVE-2026-48921 (io.jenkins.plugins:pipeline-groovy-lib) — CWE-59 / CVSS v3 7.5
Attack vector: remote (network-reachable) / no user interaction
Patched: `798.v5cc688825312` — 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.
❓ What is the problem
**A vulnerability** (CWE-59) exists in io.jenkins.plugins:pipeline-groovy-lib.
📍 Affected scope
io.jenkins.plugins:pipeline-groovy-lib — .
🔥 Severity
Severity: High (CVSS 7.5/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **798.v5cc688825312**.
🛡️ 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 'io.jenkins.plugins:pipeline-groovy-lib' .` 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 'io.jenkins.plugins:pipeline-groovy-lib' . | 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 `io.jenkins.plugins:pipeline-groovy-lib` 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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6Apply patch patch
Upgrade io.jenkins.plugins:pipeline-groovy-lib to 798.v5cc688825312ステージング環境で 798.v5cc688825312 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
maven
io.jenkins.plugins:pipeline-groovy-lib
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"798.v5cc688825312"}]}]