CVE-2026-72815

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (40th 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 — 4 sources updated this weekElevated
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-For HTTP header. A remote attacker can bypass IP-based access control lists and rate-limiting mechanisms, and forge log entries, by supplying a spoofed IP address in the X-Forwarded-For header. The issue is fixed in version 5.3.0.

CVSS v3
6.9
EG Score
6.9MEDIUMmedium confidence
EG Risk
62
EG Risk 62/100CISA 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
Severity69% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 24, 2026

Advisory Details (2)

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

go-chi chi v5.2.1 IP Spoofing via X-Forwarded-For Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/go-chi-chi-ip-spoofing-via-x-forwarded-for-header
github Patch Available🟡 PoC Available

IP Spoofing Vulnerability in `middleware.RealIP` · Advisory · go-chi/chi · GitHub

https://github.com/go-chi/chi/security/advisories/GHSA-3fxj-6jh8-hvhx

Vendor Advisories for CVE-2026-72815(5)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatcosign-main-3.1.3-0.1.hum12026-08-12redhat
redhatprometheus3-13-main-3.13.2-0.2.hum12026-08-04redhat
redhatspire1-14-main-1.14.7-0.4.hum12026-08-03redhat
redhatspire1-15-main-1.15.2-0.4.hum12026-08-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Go(2)
PackageVulnerable rangeFix by version rangeDependents
github.com/go-chi/chi/v5—
  • 5.2.1 up to 5.3.0: fixed in 5.3.0
—
github.com/go-chi/chi/v5/middleware—
  • 5.2.1 up to 5.3.0: fixed in 5.3.0
—
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, 5.2.3-1, 5.2.5-1
  • every version up to 5.3.0-1: fixed in 5.3.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 93× 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 177 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same product

4 shown

Go:github.com/go-chi/chi/v5/middleware · Debian:12:golang-github-go-chi-chi · Debian:14:golang-github-go-chi-chi

Frequently asked(5)

What is CVE-2026-72815?
CVE-2026-72815 is a medium vulnerability published on August 14, 2026. go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-For HTTP header. A remote attacker can bypass IP-based access control lists and rate-limiting mechanisms, and forge log…
When was CVE-2026-72815 disclosed?
CVE-2026-72815 was first published on August 14, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72815 actively exploited?
CVE-2026-72815 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72815?
CVE-2026-72815 has a CVSS base score of 6.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72815?
A fix for CVE-2026-72815 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72815 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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