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TI-2026-54082 Aliases CVE-2026-77573

Weblate: DNS rebinding in VCS operations allows server-side request forgery

Priority LOW 16CWE-367Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00204 10th percentileScored 2026-11-07
Fix Fixed weblate (WeblateOrg): 2026.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WeblateOrgweblatebefore 2026.82026.8Patch availableCNA
  • weblate VendorWeblateOrg Affected before 2026.8 Fixed in 2026.8 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:*——WeblateOrg
  • cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:* Versions — — ·WeblateOrg

Remediation

  • Fix · CNA weblate (WeblateOrg) Fixed in 2026.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77573

References

Other 2

  • TI-2025-23145 Weblate VCS credentials included in URL parameters are potentially logged and saved into browser history as plaintext CVSS 3.1HIGH 7.5
  • TI-2025-38033 Weblate integration with Anubis can lead to Open Redirect via redir parameter CVSS 4.0LOW 2.1
  • TI-2022-07893 Remote code execution (RCE) in Weblate CVSS 3.1HIGH 8.8
  • TI-2025-41967 Weblate has git config file overwrite vulnerability that leads to remote code execution CVSS 3.1CRITICAL 9.1
  • TI-2026-26679 Weblate: Privilege escalation in the user API endpoint CVSS 3.1HIGH 8.8
  • TI-2026-19444 Weblate has an argument injection in management console CVSS 3.1CRITICAL 9.1
See all 49 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences