# CVE-2026-62326: Weblate Has Uncontrolled Resource Consumption via

> A user with Edit source role can cause denial of service by storing malicious regular expressions that consume CPU indefinitely during validation.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-r52j-4vjp-q949

## What is CVE-2026-62326?

CVE-2026-62326 is a medium-severity denial of service vulnerability in WeblateOrg weblate, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Weblate is a web-based continuous localization platform used to manage software translations. In versions prior to 2026.7, a user with the built-in "Edit source" role can store a malicious regular expression in a source string's flags that is executed without any timeout, allowing them to stall requests and deny service. Regular expressions supplied through the regex: quality check and regex placeholders are compiled during validation but later run against translation content in RegexCheck and PlaceholderCheck with no time limit, so a catastrophic-backtracking pattern like ^(a|aa)+$ can consume CPU indefinitely. Because Weblate re-runs these checks for every linked target unit in the same request when a source unit's flags change, a single edit can trigger sustained CPU-bound denial of service. This issue is fixed in version 2026.7.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-62326?


## How do I fix CVE-2026-62326?

No fix has been published for CVE-2026-62326 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-62326 being exploited?

There is no known exploitation of CVE-2026-62326 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-62326 and fix it if it is affected.

What it is: CVE-2026-62326 is a medium-severity denial of service vulnerability in WeblateOrg weblate, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-62326 in the wild and no public exploit code.

Affected product: WeblateOrg weblate. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-62326/ (Markdown: https://insights.sbomify.com/CVE-2026-62326/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-62326
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-62326
- OSV: https://osv.dev/vulnerability/CVE-2026-62326

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-62326/
Summaries are generated and may contain mistakes; the official description above is the record.