🛡️ CVE-2026-50127 — weblate

🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-918 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Weblate SSRF: outbound URL guard misses some private ranges

Impact

Weblate's VCS_RESTRICT_PRIVATE did not properly account for some transitional IPv6 ranges, multicast addresses, or some semi-private IPv4 ranges, which allowed some addresses to bypass private range restrictions.

Patches

  • https://github.com/WeblateOrg/weblate/pull/19768

Resources

The issue was reported by @tonghuaroot via GitHub, and the same user also provided the initial patch.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2026-50127 is classified as CWE-918: Server-Side Request Forgery (SSRF). The server fetches a URL supplied by the caller, which can be pointed at internal systems it alone can reach.

Affected software

CVE-2026-50127 is recorded against 2 packages.

  • unknown
  • weblate (from 5.15 up to 2026.6)

Timeline and source

Published on 10 June 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
github.com

Details

Severity MEDIUM
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-918
Public Exploit ✅ No
Source NVD
Published 2026-06-10
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —
weblate 5.15 2026.6

Similar Threats

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