CVE-2026-33220Network attack vector

Arbitrary local file read via unchecked CDN paths

Published Apr 15, 2026 · Updated Apr 15, 2026

Path traversal in Weblate before 5.17 allows remote authenticated users to read arbitrary local files through the JavaScript CDN add-on. The cdn_parse_html task joined configured relative paths to component.full_path and read them without validating that resolution stayed inside the repository. Exploitation requires low-privileged access, user interaction, and the disabled-by-default CDN add-on; impact is limited to file disclosure.

CVSS severity6.8
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Weblate before 5.17 allows remote authenticated users to read arbitrary local files through the JavaScript CDN add-on. The cdn_parse_html task joined configured relative paths to component.full_path and read them without validating that resolution stayed inside the repository. Exploitation requires low-privileged access, user interaction, and the disabled-by-default CDN add-on; impact is limited to file disclosure.

The record

CVE
CVE-2026-33220
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
Weblate
Product
Weblate
Classifications
CWE-22, CWE-200, T1005, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 5.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Weblate · Weblateversion=< 5.17

Published CVSS scores

6.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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