CVE-2026-45106 Weblate: Stored HTML injection in editor search preview
Attackers can inject malicious HTML into search previews, executing scripts in other users' browsers to potentially steal sessions or data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-45106?
CVE-2026-45106 is a medium-severity cross-site scripting vulnerability in WeblateOrg weblate, published on 10 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Weblate is a web based localization tool. Prior to version 2026.5, Weblate's live search preview renders unit source and context as HTML without escaping. Any contributor whose content reaches those fields stores HTML and CSS that runs inside the authenticated editor of every user who runs a matching search. This issue has been patched in version 2026.5.
Weakness: CWE-79
Which versions are affected by CVE-2026-45106?
3 open source packages ship an affected version, including weblate.
| Package | Affected | Fixed in |
|---|---|---|
weblate PyPI | All versions | 2026.5 |
weblate PyPI | All versions | 2026.5 |
weblate PyPI | All versions | 2026.5 |
How do I fix CVE-2026-45106?
Upgrade weblate to 2026.5 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-45106 being exploited?
There is no known exploitation of CVE-2026-45106 in the wild and no public exploit code.
Sources
Also known as GHSA-6wxc-8mgq-w26m, PYSEC-2026-3415.