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CLSA-2026-1778661102
Vulnerability in ruby (CLSA-2026-1778661102)
Summary
vulnerability in ruby (CLSA-2026-1778661102). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `3.0.4-160.el9_0.tuxcare.els12` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CLSA-2026-1778661102** has been found in ruby.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade ruby to **3.0.4-160.el9_0.tuxcare.els12** or later.
If unsure, ask your IT team or search "ruby CLSA-2026-1778661102" on the vendor's site.
CLSA-2026-1778661102 (ruby) —
Patched: `3.0.4-160.el9_0.tuxcare.els12` — 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** (unclassified) exists in ruby.
📍 Affected scope
ruby — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **3.0.4-160.el9_0.tuxcare.els12**.
🛡️ 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 'ruby' .` 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 'ruby' . | 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 `ruby` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade ruby to 3.0.4-160.el9_0.tuxcare.els12ステージング環境で 3.0.4-160.el9_0.tuxcare.els12 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
TuxCare:AlmaLinux:9.2
ruby
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.4-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
ruby-default-gems
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.4-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
ruby-devel
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.4-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
ruby-doc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.4-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
ruby-libs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.4-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-bigdecimal
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.0-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-bundler
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.33-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-io-console
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.7-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-irb
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.5-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-json
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-minitest
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.2-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-power_assert
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-psych
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.2-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-rake
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.0.3-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-rbs
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-rdoc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.3-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-rexml
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.3-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-rss
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.9-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-test-unit
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.7-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygem-typeprof
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.2-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygems
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.33-160.el9_0.tuxcare.els12"}]}]
TuxCare:AlmaLinux:9.2
rubygems-devel
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.33-160.el9_0.tuxcare.els12"}]}]