CVE-2025-71405

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this weekElevated
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: Elevated riskExposed: 0

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

chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity51% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

go-chi chi before v5.2.2 Open Redirect via RedirectSlashes | Advisories | VulnCheck

https://www.vulncheck.com/advisories/go-chi-chi-before-open-redirect-via-redirectslashes
github Patch Available🟡 PoC Available

Host Header Injection Leads to Open Redirect in RedirectSlashes · Advisory · go-chi/chi · GitHub

https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93

Vendor Advisories for CVE-2025-71405(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/go-chi/chi/v5—5.2.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 21× 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. 2026-08-20 05:18 UTCEG score recompute
  2. 2026-08-20 05:18 UTCGHSA enrichment
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-19 03:22 UTCEG score recompute
  5. 2026-08-19 03:22 UTCGHSA enrichment
  6. 2026-08-18 13:48 UTCEPSS rescore
  7. 2026-08-18 01:24 UTCEG score recompute
  8. 2026-08-18 01:24 UTCGHSA enrichment
  9. 2026-08-17 13:46 UTCEPSS rescore
  10. 2026-08-16 23:28 UTCEG score recompute
  11. 2026-08-16 23:28 UTCGHSA enrichment
  12. 2026-08-16 14:55 UTCEPSS rescore
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 21:32 UTCGHSA enrichment
  15. 2026-08-14 19:36 UTCEG score recompute
  16. 2026-08-14 19:36 UTCGHSA enrichment
  17. 2026-08-14 19:14 UTCEG score recompute
  18. 2026-08-14 19:14 UTCGHSA enrichment
  19. 2026-08-14 12:22 UTCEG score recompute
  20. 2026-08-14 11:49 UTCEG score recompute
  21. 2026-08-14 11:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-71405?
CVE-2025-71405 is a medium vulnerability published on August 14, 2026. chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft.
When was CVE-2025-71405 disclosed?
CVE-2025-71405 was first published in the National Vulnerability Database on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71405 actively exploited?
CVE-2025-71405 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.6% of all scored CVEs.
What is the CVSS score of CVE-2025-71405?
CVE-2025-71405 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2025-71405?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71405, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-71405

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