Path Traversal in Colanode server (CVE-2026-110766)
Summary
Path traversal in Colanode server (CVE-2026-110766). Risk of unauthorized operations or information disclosure. Exploitable via GET /client/v1/avatars/.
Original description
The description as published by the source.
Colanode server through 0.4.7 contains a path traversal vulnerability that allows authenticated users to read arbitrary .jpeg files by supplying an encoded traversal sequence in avatarId. Attackers can send percent-encoded ../ sequences to GET /client/v1/avatars/:avatarId to escape the avatars directory and read .jpeg files belonging to other workspaces.
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-2026-110766 has been found in Colanode server.
Attackers can target a specific entry point like GET /client/v1/avatars/ over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Colanode server CVE-2026-110766" on the vendor's site.
CVE-2026-110766 (Colanode server) — CWE-22 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Attack surface: GET /client/v1/avatars/
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.
Path traversal (CWE-22) exists in Colanode server. Attackers reach the vulnerable code path via GET /client/v1/avatars/.
Check the vendor advisory for the affected versions of Colanode server. Attack surface: GET /client/v1/avatars/.
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual GET /client/v1/avatars/ requests with malformed payloads or SQL meta-characters. Audit SBOM/dependencies 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
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Colanode server を使っているサービスとバージョンを洗い出す。
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2Hunt for indicators of compromise detect
grep 'GET /client/v1/avatars/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
GET /client/v1/avatars/への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Post-deployment verification verify
Replay attack against GET /client/v1/avatars/ on staging to confirm patch closes the vector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 2 と同じログクエリでアラート再発が無いか継続監視。