Vulnerability-Lookup

OESA-2026-3100 (CVE-2026-54171)

Vulnerability from osv_openeuler – Published: 2026-07-24 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

rubygem-excon security update

Details

EXtended http(s) CONnections.

Security Fix(es):

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.(CVE-2026-54171)

Severity

6.5 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-54171	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-excon-0.62.0-4.oe2003sp4.noarch.rpm",
          "rubygem-excon-help-0.62.0-4.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "rubygem-excon-0.62.0-4.oe2003sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "rubygem-excon",
        "purl": "pkg:rpm/openEuler/rubygem-excon\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.62.0-4.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-excon-0.62.0-4.oe2203sp4.noarch.rpm",
          "rubygem-excon-help-0.62.0-4.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "rubygem-excon-0.62.0-4.oe2203sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "rubygem-excon",
        "purl": "pkg:rpm/openEuler/rubygem-excon\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.62.0-4.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-excon-0.104.0-2.oe2403sp1.noarch.rpm",
          "rubygem-excon-help-0.104.0-2.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "rubygem-excon-0.104.0-2.oe2403sp1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "rubygem-excon",
        "purl": "pkg:rpm/openEuler/rubygem-excon\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.104.0-2.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-excon-0.104.0-2.oe2403sp3.noarch.rpm",
          "rubygem-excon-help-0.104.0-2.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "rubygem-excon-0.104.0-2.oe2403sp3.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "rubygem-excon",
        "purl": "pkg:rpm/openEuler/rubygem-excon\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.104.0-2.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-excon-0.104.0-2.oe2403sp4.noarch.rpm",
          "rubygem-excon-help-0.104.0-2.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "rubygem-excon-0.104.0-2.oe2403sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "rubygem-excon",
        "purl": "pkg:rpm/openEuler/rubygem-excon\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.104.0-2.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "EXtended http(s) CONnections.\r\n\r\nSecurity Fix(es):\n\nExcon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon\u0026apos;s RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.(CVE-2026-54171)",
  "id": "OESA-2026-3100",
  "modified": "2026-08-06T11:11:59Z",
  "published": "2026-07-24T11:11:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3100"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54171"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rubygem-excon security update",
  "upstream": [
    "CVE-2026-54171"
  ]
}

CVE-2026-54171 (GCVE-0-2026-54171)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:09 – Updated: 2026-07-20 13:59

Title

Excon: redact additional sensitive/risky headers when following redirects

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-20 13:59 UTC

CWE

CWE-201 - Insertion of Sensitive Information Into Sent Data

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/excon/excon/security/advisorie…	x_refsource_CONFIRM
https://github.com/excon/excon/pull/901	x_refsource_MISC
https://github.com/excon/excon/commit/ea89a35308a…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
excon	excon	Affected: < 1.5.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54171",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-20T13:59:31.856340Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-07-20T13:59:42.883Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "excon",
          "vendor": "excon",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.5.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon\u0027s RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-201",
              "description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
              "lang": "en",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-17T20:09:44.716Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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          ],
          "url": "https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r"
        },
        {
          "name": "https://github.com/excon/excon/pull/901",
          "tags": [
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          "url": "https://github.com/excon/excon/pull/901"
        },
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          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3"
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      "source": {
        "advisory": "GHSA-48rx-c7pg-q66r",
        "discovery": "UNKNOWN"
      },
      "title": "Excon: redact additional sensitive/risky headers when following redirects"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54171",
    "datePublished": "2026-07-17T20:09:44.716Z",
    "dateReserved": "2026-06-11T21:46:52.381Z",
    "dateUpdated": "2026-07-20T13:59:42.883Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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