CVE-2025-3841Public exploit

Local output manipulation via untrusted Jinja templates

Published Apr 21, 2025 · Updated Apr 24, 2025

Template injection in Wix.com Ltd. Jam at e87a6fd85cf8fb5ff37b62b2d68f917219d07ae9 allows local users to alter generated HTML via crafted YAML. jam.py passes inline config['template'] text or content fetched from template['url'] directly to Jinja2 Template.render without neutralizing template expressions. A local user must control the YAML input; evaluation runs with the invoking process's privileges and can change output or access process-readable data.

CVSS severity4.8
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Template injection in Wix.com Ltd. Jam at e87a6fd85cf8fb5ff37b62b2d68f917219d07ae9 allows local users to alter generated HTML via crafted YAML. jam.py passes inline config['template'] text or content fetched from template['url'] directly to Jinja2 Template.render without neutralizing template expressions. A local user must control the YAML input; evaluation runs with the invoking process's privileges and can change output or access process-readable data.

The record

CVE
CVE-2025-3841
Published
Apr 21, 2025
Updated
Apr 24, 2025
Vendor
Wix.com Ltd.
Product
Jam
Classifications
CWE-1336, CWE-791
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=e87a6fd85cf8fb5ff37b62b2d68f917219d07ae9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Wix.com Ltd. · Jamversion=e87a6fd85cf8fb5ff37b62b2d68f917219d07ae9

Published CVSS scores

1.7VulDB CNAAV:L/AC:L/Au:S/C:N/I:P/A:N
4.8VulDB CNACVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.3VulDB CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
CWE-791Incomplete Filtering of Special Elements

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo