Vulnerability in org.omnifaces:omnifaces (CVE-2026-41883)
Summary
Vulnerability in org.omnifaces:omnifaces (CVE-2026-41883). Successful exploitation can lead to full system takeover. Exploitable via CDNResourceHandler. Mitigation: upgrade to 5.2.3 or later.
Original description
The description as published by the source.
OmniFaces is a utility library for Faces. Prior to versions 1.14.2, 2.7.32, 3.14.16, 4.7.5, and 5.2.3, there is a server-side EL injection leading to Remote Code Execution (RCE). This affects applications that use CDNResourceHandler with a wildcard CDN mapping (e.g. libraryName:=https://cdn.example.com/). An attacker can craft a resource request URL containing an EL expression in the resource name, which is evaluated server-side. This issue has been patched in versions 1.14.2, 2.7.32, 3.14.16, 4.7.5, and 5.2.3.
Source: NIST National Vulnerability Database 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-2026-41883 has been found in org.omnifaces:omnifaces.
Attackers can target a specific entry point like CDNResourceHandler over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.1/10.
What to do: upgrade org.omnifaces:omnifaces to 5.2.3 or later.
If unsure, ask your IT team or search "org.omnifaces:omnifaces CVE-2026-41883" on the vendor's site.
CVE-2026-41883 (org.omnifaces:omnifaces) — CWE-917 / CVSS v3 8.1
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: CDNResourceHandler
Patched: 5.2.3 — 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-917) exists in org.omnifaces:omnifaces. Attackers reach the vulnerable code path via CDNResourceHandler without authentication.
Check the vendor advisory for the affected versions of org.omnifaces:omnifaces. Attack surface: CDNResourceHandler.
Severity: High (CVSS 8.1/10). Successful exploitation can lead to full system takeover.
Update to 5.2.3.
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. 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 org.omnifaces:omnifaces 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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2Apply patch patch
Upgrade org.omnifaces:omnifaces to 5.2.3ステージング環境で 5.2.3 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。
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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
- web github.com