Is CVE-2026-33220 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-33220 being exploited in the wild.

How severe is CVE-2026-33220?

Medium severity, with a CVSS score of 6.8, published 15 April 2026.

Which products and versions are affected?

weblate (PyPI) < 5.17, ECOSYSTEM:introduced=0,fixed=5.17.

Is there a fix for CVE-2026-33220?

Yes. weblate (PyPI): upgrade to 5.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-33220 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-33220?

Check whether you run weblate (PyPI) or Weblate at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-33220: Weblate path traversal in JavaScript localization CDN add-on

Q: Which products and versions are affected?

weblate (PyPI) < 5.17, ECOSYSTEM:introduced=0,fixed=5.17.

Q: Is there a fix for CVE-2026-33220?

Yes. weblate (PyPI): upgrade to 5.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-33220 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-33220?

Check whether you run weblate (PyPI) or Weblate at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-33220 · Severity: medium · CVSS 6.8 · Published 2026-04-15

Weblate, a web-based translation tool, contains a vulnerability in its JavaScript localization CDN add-on. This flaw allows an attacker to read sensitive files from the server's local storage that should be restricted. If exploited, this could lead to the exposure of configuration files, credentials, or other private data, potentially compromising the entire translation platform.

Technologies: weblate (PyPI), Weblate. Vendors: PyPI, Weblate.

Quick answers

Is CVE-2026-33220 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-33220 being exploited in the wild.
How severe is CVE-2026-33220?: Medium severity, with a CVSS score of 6.8, published 15 April 2026.
Which products and versions are affected?: weblate (PyPI) < 5.17, ECOSYSTEM:introduced=0,fixed=5.17.
Is there a fix for CVE-2026-33220?: Yes. weblate (PyPI): upgrade to 5.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-33220 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-33220?: Check whether you run weblate (PyPI) or Weblate at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

weblate (PyPI): upgrade to 5.17 or later
```
pip install "weblate>=5.17"
```

Technical details

A path traversal vulnerability (CWE-22) exists in Weblate's JavaScript localization CDN add-on. The root cause is located in the translation memory API, which exposed unintended endpoints and failed to implement proper access control. An authenticated attacker with low privileges can exploit this by providing crafted input to construct pathnames that resolve to locations outside the intended repository directory. This allows for the unauthorized reading of arbitrary local files (CWE-200) on the host system. The vulnerability is patched in version 5.17. The CDN add-on is not enabled by default.

Affected products

WeblateOrg Weblate < 5.17

Identifiers

CVE-2026-33220
GHSA-mqph-7h49-hqfm
PYSEC-2026-153

Timeline

2026-04-15: disclosed
2026-04-15: patched: Fixed in version 5.17
2026-04-16: advisory

References

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