CVE-2026-24126: Weblate Weblate Has An Argument Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-33fm-6gp7-4p47
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CVSS 6.6
CWE-88
Published
Advisory Summary

CVE-2026-24126 is a MODERATE (CVSS 6.6) weblate has an argument injection vulnerability (CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')) affecting Weblate libraries in the PyPI ecosystem. The issue involves weblate has an argument injection in management console. Remediation is available by upgrading affected packages to version 5.16.0.

CVE-2026-24126 at a Glance

CVE Identifier CVE-2026-24126
GHSA Identifier GHSA-33fm-6gp7-4p47
Severity MODERATE
CVSS v3.1 Base Score 6.6
CWE Classification CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Affected Product Weblate
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-24126

To remediate this vulnerability, upgrade all affected Weblate dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Weblate fixed: 5.16.0 
pip install Weblate>=5.16.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show Weblate

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-24126, inspect your installed packages using pip:

pip show Weblate

Analyze the terminal output to locate any version of Weblate in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.16.0), your application is affected.

Note: The pip show Weblate command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), where the product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. In Weblate, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact The SSH management console did not validate the passed input while adding the SSH host key, which could lead to an argument injection to `ssh-add`. ### Patches * https://github.com/WeblateOrg/weblate/pull/17722 ### Workarounds Properly limit access to the management console. ### References This issue was reported to us by [alexb_616](https://hackerone.com/alexb_616) via HackerOne.

CVE-2026-24126 Affected Weblate Versions

1 component(s)
Fixed Versions:
5.16.0
Product / Package Ecosystem Affected Versions Fixed Version
Weblate
pypi/Weblate
PyPI
< 5.16.0
5.16.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-33fm-6gp7-4p47
NVD — CVE-2026-24126 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24126
Weblate Source Repository REPOSITORY
https://github.com/WeblateOrg/weblate/pull/17722
Security Fix Commit FIX COMMIT
https://github.com/WeblateOrg/weblate/commit/78773cc141ce0a97900c11341e6cf856451395fd
Weblate Source Repository REPOSITORY
https://github.com/WeblateOrg/weblate

Frequently Asked Questions

What is CVE-2026-24126?
CVE-2026-24126 is a security vulnerability in Weblate involving Weblate has an argument injection in management console under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection').
Which Weblate versions are affected?
Affected versions include releases prior to 5.16.0 across affected packages: Weblate.
What version fixes CVE-2026-24126?
Upgrading to 5.16.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Weblate affected?
Yes, Weblate is affected in releases prior to 5.16.0. Upgrade your dependency to 5.16.0 or later.
What is the CVSS score of CVE-2026-24126?
CVE-2026-24126 has a CVSS v3.1 base score of 6.6 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L.
What CWE is associated with CVE-2026-24126?
CVE-2026-24126 is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.).
How can I check PyPI dependencies for CVE-2026-24126?
Run the dependency tree command: 'pip show Weblate'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-33fm-6gp7-4p47",
  "modified" : "2026-02-19T20:30:31Z",
  "published" : "2026-02-17T16:37:55Z",
  "aliases" : [ "CVE-2026-24126" ],
  "summary" : "Weblate has an argument injection in management console",
  "details" : "### Impact\nThe SSH management console did not validate the passed input while adding the SSH host key, which could lead to an argument injection to `ssh-add`.\n\n### Patches\n* https://github.com/WeblateOrg/weblate/pull/17722\n\n### Workarounds\nProperly limit access to the management console.\n\n### References\nThis issue was reported to us by [alexb_616](https://hackerone.com/alexb_616) via HackerOne.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Weblate"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.16.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-33fm-6gp7-4p47"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24126"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/pull/17722"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/commit/78773cc141ce0a97900c11341e6cf856451395fd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/WeblateOrg/weblate"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-88" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-17T16:37:55Z",
    "nvd_published_at" : "2026-02-19T00:16:21Z"
  }
}