CVE-2026-77573
Low · CVSS 3.5Published 2026-08-26
CVSS
3.5
Low
EPSS
0.1%
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-77573?
Weblate is a web-based continuous localization platform used to manage software translations. In versions prior to 2026.8, a user permitted to manage component repository URLs can perform server-side request forgery against internal services through DNS rebinding during VCS operations. Weblate validates the hostname's first DNS resolution, but the external VCS clients that later connect perform a separate DNS lookup, so an attacker-controlled hostname that initially resolves to a public address can be re-pointed to an internal or private address before the connection is made. By triggering a clone, fetch, push, or similar remote operation, the attacker can cause Weblate to reach internal VCS-compatible services and potentially expose private repository contents. Installations that permit untrusted repository hostnames while using VCS_RESTRICT_PRIVATE=True are affected. This issue is fixed in version 2026.8.
CVSS Score Explained
CVSS 3.5 is Low severity. Impact is limited and exploitation is difficult. Patch when convenient.
EPSS Exploitation Probability
EPSS 0.1% — low probability of active exploitation. Can be handled in normal patch cycles.
References & Patches
- ›https://github.com/WeblateOrg/weblate/commit/3f31f094eb4f99587607af0085d4fb35461454a1
- ›https://github.com/WeblateOrg/weblate/security/advisories/GHSA-45m9-pf98-8jmq
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