# CVE-2026-57942

## Summary

- **CVE ID:** CVE-2026-57942
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-348
- **Published:** Jun 29, 2026
- **Last Modified:** Jun 30, 2026

## Description

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 (0)
- LibreTranslate — LibreTranslate (397fd224080515d4001a1bc60c8fed53e3c56b6f)

## References

- [CNA](https://github.com/LibreTranslate/LibreTranslate/issues/986)
- [CNA](https://github.com/LibreTranslate/LibreTranslate/pull/987)
- [CNA](https://github.com/LibreTranslate/LibreTranslate/commit/397fd224080515d4001a1bc60c8fed53e3c56b6f)
- [CNA](https://www.vulncheck.com/advisories/libretranslate-ip-spoofing-via-x-forwarded-for-header)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.28%
- **EPSS Percentile:** 20.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._