CVE-2026-57942

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-06-29. the CNA's CVSS baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(high)
EPSS
9.0%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (4)

Auto-updated Jun 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

X-Forwarded-For Header Spoofing Allows Rate Limit and Flood Ban Bypass · Issue #986 · LibreTranslate/LibreTranslate · GitHub

https://github.com/LibreTranslate/LibreTranslate/issues/986
generic

LibreTranslate - IP Spoofing via X-Forwarded-For Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/libretranslate-ip-spoofing-via-x-forwarded-for-header
github_pr

Add --trust-forwarded-for

Fix merged in LibreTranslate/LibreTranslate PR #987 on 2026-06-14 — awaiting tagged release

https://github.com/LibreTranslate/LibreTranslate/pull/987
github_commit

commit 397fd2240805 (LibreTranslate/LibreTranslate)

Fix landed in LibreTranslate/LibreTranslate commit 397fd2240805 — awaiting tagged release

https://github.com/LibreTranslate/LibreTranslate/commit/397fd224080515d4001a1bc60c8fed53e3c56b6f

Vendor Advisories for CVE-2026-57942(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 14:23 UTCEG score recompute
  4. 2026-07-06 14:22 UTCGHSA enrichment
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 14:53 UTCEG score recompute
  8. 2026-07-05 14:53 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 15:25 UTCEG score recompute
  12. 2026-07-04 15:25 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 15:58 UTCEG score recompute
  16. 2026-07-03 15:57 UTCGHSA enrichment
  17. 2026-07-02 16:29 UTCEG score recompute
  18. 2026-07-02 16:29 UTCGHSA enrichment
  19. 2026-07-01 17:00 UTCEG score recompute
  20. 2026-07-01 17:00 UTCGHSA enrichment
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 17:32 UTCEG score recompute
  24. 2026-06-30 17:32 UTCGHSA enrichment
  25. 2026-06-29 18:04 UTCEG score recompute
Show 1 more
  1. 2026-06-29 18:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57942?
CVE-2026-57942 is a medium vulnerability published on June 29, 2026. LibreTranslate through 1.9.7, fixed in commit 397fd22, contains an IP spoofing vulnerability in the getremoteaddress() function that allows unauthenticated attackers to spoof client IP addresses by injecting arbitrary values into the X-Forwarded-For header without trusted proxy validation.…
When was CVE-2026-57942 disclosed?
CVE-2026-57942 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57942 actively exploited?
CVE-2026-57942 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57942?
CVE-2026-57942 has a CVSS v4.0 base score of 5.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-57942?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57942, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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