Vulnerability in curl (USN-8525-1)

Summary

vulnerability in curl (USN-8525-1). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `7.35.0-1ubuntu2.20+esm21` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **USN-8525-1** has been found in curl. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade curl to **7.35.0-1ubuntu2.20+esm21** or later. If unsure, ask your IT team or search "curl USN-8525-1" on the vendor's site.

USN-8525-1 (curl) — Patched: `7.35.0-1ubuntu2.20+esm21` — 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 curl.

📍 Affected scope

curl — .

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure

🔧 How to fix

Update to **7.35.0-1ubuntu2.20+esm21**.

🛡️ 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 'curl' .` 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

1
Identify exposure identify
```
grep -r 'curl' . | 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 `curl` を grep し、稼働しているサービス・バージョンを把握する。
6
Apply patch patch
```
Upgrade curl to 7.35.0-1ubuntu2.20+esm21
```
ステージング環境で 7.35.0-1ubuntu2.20+esm21 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。
7
Post-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

Ubuntu:Pro:14.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.35.0-1ubuntu2.20+esm21"}]}]

Ubuntu:Pro:16.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.47.0-1ubuntu2.19+esm17"}]}]

Ubuntu:Pro:18.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.58.0-2ubuntu3.24+esm10"}]}]

Ubuntu:Pro:20.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.68.0-1ubuntu2.25+esm5"}]}]

Ubuntu:24.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.0-2ubuntu10.11"}]}]

Ubuntu:25.10 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.1-2ubuntu1.5"}]}]

Ubuntu:26.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.18.0-1ubuntu2.3"}]}]

References

advisory https://ubuntu.com/security/notices/USN-8525-1
report https://ubuntu.com/security/CVE-2024-8096
report https://ubuntu.com/security/CVE-2024-11053
report https://ubuntu.com/security/CVE-2026-5545
report https://ubuntu.com/security/CVE-2026-5773
report https://ubuntu.com/security/CVE-2026-7168
report https://ubuntu.com/security/CVE-2026-10536
report https://ubuntu.com/security/CVE-2026-11352
report https://ubuntu.com/security/CVE-2026-11564
report https://ubuntu.com/security/CVE-2026-11586
report https://ubuntu.com/security/CVE-2026-12064