CVE-2026-57942: Libretranslate

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

LibreTranslate through 1.9.7, fixed in commit 397fd22, contains an IP spoofing vulnerability in the get_remote_address() function that allows unauthenticated attackers to spoof client IP addresses by injecting arbitrary values into the X-Forwarded-For header without trusted proxy validation. Attackers can bypass per-IP rate limiting and flood bans by supplying forged addresses in the X-Forwarded-For header to enable unlimited API abuse.

Affected products

• Libretranslate Libretranslate: up to and including 1.9.7

Published 2026-06-29. Last modified 2026-06-29.