Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-41883

OmniFaces: EL injection via crafted resource name in wildcard CDN mapping
Back to all
CVE

CVE-2026-41883

OmniFaces: EL injection via crafted resource name in wildcard CDN mapping

Impact

Server-side EL injection leading to Remote Code Execution (RCE). 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.

The severity depends on the EL implementation and the objects available in the EL context. In the worst case this leads to Remote Code Execution (RCE). At minimum it allows information disclosure and denial of service.

Applications using CDNResourceHandler without wildcard mappings (i.e. only explicit resource-to-URL mappings) are not affected.

Patches

Fixed in versions 5.2.3, 4.7.5, 3.14.16, 2.7.32, and 1.14.2. Users should upgrade to the appropriate version for their branch.

Workarounds

Replace wildcard CDN mappings with explicit resource-to-URL mappings. For example, replace:

libraryName:*=https://cdn.example.com/*

with individual entries:

libraryName:resource1.js=https://cdn.example.com/resource1.js,
libraryName:resource2.js=https://cdn.example.com/resource2.js

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.1
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
8.1
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/omnifaces/omnifaces/security/advisories/GHSA-vp6r-9m58-5xv8, https://nvd.nist.gov/vuln/detail/CVE-2026-41883, https://github.com/omnifaces/omnifaces

Severity

8.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.1
EPSS Probability
0.00363%
EPSS Percentile
0.58746%
Introduced Version
5.0-M1,4.0-M1,3.0-RC1,2.6-RC1,2.1-RC1,1.11-RC1,2.0-RC1,1.6
Fix Available
5.2.3,4.7.5,3.14.16,2.7.32,1.14.2

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading