---
cve: "CVE-2026-62326"
severity: "MEDIUM"
cvss: 6.5
epss: "0.2%"
vendor: "WeblateOrg"
kev: false
exploited: false
published: "2026-08-26 21:16:39"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T08:26:12+02:00"
---

# CVE-2026-62326

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 8fd8431414bec5c86dbc94815319fc474518286a (Commit)

## Referenzen

- <https://github.com/WeblateOrg/weblate/security/advisories/GHSA-r52j-4vjp-q949>
- <https://github.com/WeblateOrg/weblate/commit/8fd8431414bec5c86dbc94815319fc474518286a>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-62326) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_