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: 0.4% (30th percentile of EPSS-scored CVEs). 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 — 3 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: 0.4%CVSS: 5.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
5.1MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 14, 2026

Last Modified

September 29, 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

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-go-chi-chi5.0.7-1 ... 5.3.0-1 (6 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-go-chi-chi5.2.0-1, 5.2.3-1, 5.2.5-1, 5.3.0-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-go-chi-chi5.2.0-1
  • every version up to 5.2.3-1: fixed in 5.2.3-1
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/go-chi/chi/v5—
  • every version up to 5.2.2: fixed in 5.2.2
  • 5.2.1 up to 5.2.2: fixed in 5.2.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 66× 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.

Showing the most recent 100 of 126 total refreshes for this CVE.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-03 19:42 UTCEG score recompute
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-02 07:22 UTCEG score recompute
  5. 2026-10-02 07:22 UTCGHSA enrichment
  6. 2026-10-01 19:49 UTCEPSS rescore
  7. 2026-10-01 19:49 UTCEPSS rescore
  8. 2026-09-30 21:42 UTCEG score recompute
  9. 2026-09-30 21:42 UTCGHSA enrichment
  10. 2026-09-30 15:02 UTCEPSS rescore
  11. 2026-09-29 15:20 UTCEPSS rescore
  12. 2026-09-29 10:14 UTCEG score recompute
  13. 2026-09-29 10:14 UTCGHSA enrichment
  14. 2026-09-28 12:09 UTCEG score recompute
  15. 2026-09-28 12:09 UTCGHSA enrichment
  16. 2026-09-27 09:39 UTCEG score recompute
  17. 2026-09-27 09:39 UTCGHSA enrichment
  18. 2026-09-26 15:58 UTCEPSS rescore
  19. 2026-09-24 20:16 UTCEG score recompute
  20. 2026-09-24 20:16 UTCGHSA enrichment
  21. 2026-09-24 14:02 UTCEPSS rescore
  22. 2026-09-23 13:47 UTCEPSS rescore
  23. 2026-09-23 13:15 UTCEG score recompute
  24. 2026-09-23 13:15 UTCGHSA enrichment
  25. 2026-09-22 11:18 UTCEG score recompute
Show 75 more
  1. 2026-09-22 11:18 UTCGHSA enrichment
  2. 2026-09-21 09:22 UTCEG score recompute
  3. 2026-09-21 09:22 UTCGHSA enrichment
  4. 2026-09-20 20:15 UTCEPSS rescore
  5. 2026-09-20 05:39 UTCEG score recompute
  6. 2026-09-20 05:39 UTCGHSA enrichment
  7. 2026-09-19 03:42 UTCEG score recompute
  8. 2026-09-19 03:42 UTCGHSA enrichment
  9. 2026-09-18 19:27 UTCEPSS rescore
  10. 2026-09-18 01:46 UTCEG score recompute
  11. 2026-09-18 01:46 UTCGHSA enrichment
  12. 2026-09-17 19:30 UTCEPSS rescore
  13. 2026-09-16 23:50 UTCEG score recompute
  14. 2026-09-16 23:50 UTCGHSA enrichment
  15. 2026-09-16 14:07 UTCEPSS rescore
  16. 2026-09-16 05:14 UTCEPSS rescore
  17. 2026-09-15 16:41 UTCEG score recompute
  18. 2026-09-15 16:41 UTCGHSA enrichment
  19. 2026-09-15 03:10 UTCEPSS rescore
  20. 2026-09-14 14:37 UTCEG score recompute
  21. 2026-09-14 14:37 UTCGHSA enrichment
  22. 2026-09-13 16:46 UTCEPSS rescore
  23. 2026-09-13 12:38 UTCEG score recompute
  24. 2026-09-13 12:38 UTCGHSA enrichment
  25. 2026-09-12 15:00 UTCEPSS rescore
  26. 2026-09-12 10:42 UTCEG score recompute
  27. 2026-09-12 10:42 UTCGHSA enrichment
  28. 2026-09-11 09:36 UTCEPSS rescore
  29. 2026-09-11 08:43 UTCEG score recompute
  30. 2026-09-11 08:43 UTCGHSA enrichment
  31. 2026-09-10 09:34 UTCEPSS rescore
  32. 2026-09-10 06:47 UTCGHSA enrichment
  33. 2026-09-09 04:50 UTCEG score recompute
  34. 2026-09-09 04:50 UTCGHSA enrichment
  35. 2026-09-08 22:00 UTCEPSS rescore
  36. 2026-09-07 16:00 UTCEPSS rescore
  37. 2026-09-07 07:12 UTCEG score recompute
  38. 2026-09-07 07:12 UTCGHSA enrichment
  39. 2026-09-06 13:47 UTCEPSS rescore
  40. 2026-09-06 04:57 UTCEG score recompute
  41. 2026-09-06 04:57 UTCGHSA enrichment
  42. 2026-09-05 03:01 UTCEG score recompute
  43. 2026-09-05 03:01 UTCGHSA enrichment
  44. 2026-09-04 05:06 UTCEPSS rescore
  45. 2026-09-04 01:00 UTCGHSA enrichment
  46. 2026-09-02 22:58 UTCEG score recompute
  47. 2026-09-02 22:58 UTCGHSA enrichment
  48. 2026-09-02 14:11 UTCEPSS rescore
  49. 2026-09-01 13:53 UTCEPSS rescore
  50. 2026-09-01 13:33 UTCEG score recompute
  51. 2026-09-01 13:33 UTCGHSA enrichment
  52. 2026-08-31 11:37 UTCEG score recompute
  53. 2026-08-31 11:37 UTCGHSA enrichment
  54. 2026-08-30 08:58 UTCEG score recompute
  55. 2026-08-30 08:58 UTCGHSA enrichment
  56. 2026-08-30 01:21 UTCEPSS rescore
  57. 2026-08-29 06:57 UTCEG score recompute
  58. 2026-08-29 06:57 UTCGHSA enrichment
  59. 2026-08-28 21:40 UTCEPSS rescore
  60. 2026-08-27 20:39 UTCEG score recompute
  61. 2026-08-27 20:39 UTCGHSA enrichment
  62. 2026-08-27 14:24 UTCEPSS rescore
  63. 2026-08-26 18:43 UTCEG score recompute
  64. 2026-08-26 18:43 UTCGHSA enrichment
  65. 2026-08-26 14:45 UTCEPSS rescore
  66. 2026-08-25 14:58 UTCEG score recompute
  67. 2026-08-25 14:58 UTCGHSA enrichment
  68. 2026-08-25 13:48 UTCEPSS rescore
  69. 2026-08-24 14:16 UTCEPSS rescore
  70. 2026-08-24 13:02 UTCEG score recompute
  71. 2026-08-24 13:02 UTCGHSA enrichment
  72. 2026-08-23 11:06 UTCEG score recompute
  73. 2026-08-23 11:06 UTCGHSA enrichment
  74. 2026-08-23 00:18 UTCEPSS rescore
  75. 2026-08-22 09:10 UTCEG score recompute

Related CVEs(same product + same CWE)

Same product

4 shown

Debian:12:golang-github-go-chi-chi · Debian:14:golang-github-go-chi-chi

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 on August 14, 2026, with the most recent update on September 29, 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 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-71405?
CVE-2025-71405 has a CVSS base score of 5.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-71405?
A fix for CVE-2025-71405 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-71405 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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

Explore →

Is Your Infrastructure Affected by CVE-2025-71405?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs