Skip to main content
VulnerabilityPublished Updated

CVE-2026-57942: LibreTranslate · Use of Less Trusted Source

Affects LibreTranslateSource CVE Database V5

0
Compare

Public exploit available · CVSS 6.9 Medium.

Data as of 8 Nov 2026, 14:47 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.9
CNA (VulnCheck)CVSS 3.15.3
CISA SSVC
Exploitation
Proof of concept is public or traded
Automatable
Attackers can reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-06-29.

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

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 29 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CISA SSVC: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by VulnCheck

    , 3 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. CISA SSVC assessment

    proof of concept public

    , 1 hour after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
LibreTranslateLibreTranslateAffected
  • <=1.9.7
Fixed in–
PyPILibreTranslatepkg:pypi/LibreTranslateOther threatsAffected
  • <=1.9.7
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available and was implemented in commit 397fd22. Users should upgrade LibreTranslate to a version that includes this commit to remediate the vulnerability. Until upgraded, administrators should consider additional network-level protections or proxy validation to mitigate spoofing risks.

Description

CVE-2026-57942 is an IP spoofing vulnerability in LibreTranslate versions up to 1.9.7. The flaw exists in the get_remote_address() function, which fails to properly validate the X-Forwarded-For header from untrusted sources. This allows unauthenticated attackers to spoof client IP addresses, bypassing per-IP rate limiting and flood bans, potentially enabling unlimited API abuse. The issue was fixed in a commit identified as 397fd22.

References

Community reviews

Loading reviews…