CVE-2026-33435Network attack vector

Authenticated code execution via restored VCS hooks

Published Apr 15, 2026 · Updated Apr 15, 2026

Code injection in Weblate before 5.17 allows remote authenticated users with project-creation rights to execute code through a crafted backup. The project-backup restore path extracted attacker-supplied Git and Mercurial configuration, including executable Git hooks, instead of rebuilding trusted VCS settings. Exploitation requires permission to create a project and restore its backup, after which a restored hook executes with the Weblate service's privileges.

CVSS severity8.0
High
EPSS probability0.71%
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

Code injection in Weblate before 5.17 allows remote authenticated users with project-creation rights to execute code through a crafted backup. The project-backup restore path extracted attacker-supplied Git and Mercurial configuration, including executable Git hooks, instead of rebuilding trusted VCS settings. Exploitation requires permission to create a project and restore its backup, after which a restored hook executes with the Weblate service's privileges.

The record

CVE
CVE-2026-33435
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
Weblate
Product
Weblate
Classifications
CWE-23, CWE-94, CWE-434, 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

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=< 5.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Weblate · Weblateversion=< 5.17

Published CVSS scores

8.0GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-434Unrestricted Upload of File with Dangerous Type
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

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