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CVE-2026-72817 (GCVE-0-2026-72817)

Vulnerability from nvd – Published: 2026-08-14 11:35 – Updated: 2026-08-14 11:35

Title

go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For

Summary

go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0.9.0 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

convto

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
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        {
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          "packageURL": "pkg:golang/github.com/go-chi/chi/middleware",
          "product": "chi",
          "vendor": "go-chi",
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              "status": "affected",
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              "versionType": "semver"
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              "version": "5.3.0",
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            }
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          "lang": "en",
          "type": "reporter",
          "value": "convto"
        }
      ],
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          "lang": "en",
          "value": "go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
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            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          },
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            }
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        "shortName": "VulnCheck"
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        },
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          ],
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        }
      ],
      "title": "go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For",
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        "engine": "vulncheck-endgame"
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    }
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  "cveMetadata": {
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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-72817",
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    "dateReserved": "2026-08-10T15:12:16.754Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-72816 (GCVE-0-2026-72816)

Vulnerability from nvd – Published: 2026-08-14 11:35 – Updated: 2026-08-14 15:22

Title

go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware

Summary

go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifying that the request originated from a trusted proxy. Attackers can supply arbitrary IP addresses in these headers to bypass IP-based access controls, evade rate limiting and geo-IP restrictions, and pollute audit logs. Fixed in 5.3.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 15:21 UTC

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

rezmoss

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
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        "metrics": [
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                "id": "CVE-2026-72816",
                "options": [
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                  },
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                    "Technical Impact": "partial"
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                "timestamp": "2026-08-14T15:21:50.655188Z",
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          }
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
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          "packageURL": "pkg:golang/https://github.com/go-chi/chi",
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}

CVE-2026-72815 (GCVE-0-2026-72815)

Vulnerability from nvd – Published: 2026-08-14 11:35 – Updated: 2026-08-14 11:35

Title

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

Summary

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.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-i…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 5.2.1 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

Saku0512

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:golang/https://github.com/go-chi/chi",
          "product": "chi",
          "vendor": "go-chi",
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              "status": "affected",
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              "versionType": "semver"
            },
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              "version": "5.3.0",
              "versionType": "semver"
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          ]
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          "type": "reporter",
          "value": "Saku0512"
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            "vulnIntegrityImpact": "LOW"
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}

CVE-2025-71405 (GCVE-0-2025-71405)

Vulnerability from nvd – Published: 2026-08-14 11:35 – Updated: 2026-08-14 18:57

Title

go-chi chi before v5.2.2 Open Redirect via RedirectSlashes

Summary

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.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 18:57 UTC

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0 , < 5.2.2 (semver) Unaffected: 5.2.2 (semver)

Date Public

2025-06-20 00:00

Credits

anuraagbaishya

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-71405",
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                    "Exploitation": "poc"
                  },
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                  },
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                    "Technical Impact": "partial"
                  }
                ],
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                "timestamp": "2026-08-14T18:57:32.118107Z",
                "version": "2.0.3"
              },
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          }
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    ],
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          "packageURL": "pkg:golang/chi",
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          "lang": "en",
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      ],
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CVE-2026-72817 (GCVE-0-2026-72817)

Vulnerability from cvelistv5 – Published: 2026-08-14 11:35 – Updated: 2026-08-14 11:35

Title

go-chi chi 0.9.0 before 5.3.0 IP Spoofing via X-Forwarded-For

Summary

go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0.9.0 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

convto

Show details on NVD website

JSON

To clipboard

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CVE-2026-72816 (GCVE-0-2026-72816)

Vulnerability from cvelistv5 – Published: 2026-08-14 11:35 – Updated: 2026-08-14 15:22

Title

go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware

Summary

go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifying that the request originated from a trusted proxy. Attackers can supply arbitrary IP addresses in these headers to bypass IP-based access controls, evade rate limiting and geo-IP restrictions, and pollute audit logs. Fixed in 5.3.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 15:21 UTC

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

rezmoss

Show details on NVD website

JSON

To clipboard

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CVE-2026-72815 (GCVE-0-2026-72815)

Vulnerability from cvelistv5 – Published: 2026-08-14 11:35 – Updated: 2026-08-14 11:35

Title

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

Summary

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.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-i…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 5.2.1 , < 5.3.0 (semver) Unaffected: 5.3.0 (semver)

Date Public

2026-05-22 00:00

Credits

Saku0512

Show details on NVD website

JSON

To clipboard

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CVE-2025-71405 (GCVE-0-2025-71405)

Vulnerability from cvelistv5 – Published: 2026-08-14 11:35 – Updated: 2026-08-14 18:57

Title

go-chi chi before v5.2.2 Open Redirect via RedirectSlashes

Summary

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.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 18:57 UTC

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/go-chi/chi/security/advisories…	vendor-advisory
https://www.vulncheck.com/advisories/go-chi-chi-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
go-chi	chi	Affected: 0 , < 5.2.2 (semver) Unaffected: 5.2.2 (semver)

Date Public

2025-06-20 00:00

Credits

anuraagbaishya

Show details on NVD website

JSON

To clipboard

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          "versions": [
            {
              "lessThan": "5.2.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.2.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "anuraagbaishya"
        }
      ],
      "datePublic": "2025-06-20T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-14T11:35:23.411Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-vrw8-fxc6-2r93)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93"
        },
        {
          "name": "VulnCheck Advisory: go-chi chi before v5.2.2 Open Redirect via RedirectSlashes",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/go-chi-chi-before-open-redirect-via-redirectslashes"
        }
      ],
      "title": "go-chi chi before v5.2.2 Open Redirect via RedirectSlashes",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2025-71405",
    "datePublished": "2026-08-14T11:35:23.411Z",
    "dateReserved": "2026-07-18T12:38:41.077Z",
    "dateUpdated": "2026-08-14T18:57:43.537Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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8 vulnerabilities found for chi by go-chi

CVE-2026-72817 (GCVE-0-2026-72817)

CVE-2026-72816 (GCVE-0-2026-72816)

CVE-2026-72815 (GCVE-0-2026-72815)

CVE-2025-71405 (GCVE-0-2025-71405)

CVE-2026-72817 (GCVE-0-2026-72817)

CVE-2026-72816 (GCVE-0-2026-72816)

CVE-2026-72815 (GCVE-0-2026-72815)

CVE-2025-71405 (GCVE-0-2025-71405)