FKIE_CVE-2025-22871

Vulnerability from fkie_nvd - Published: 2025-04-08 20:15 - Updated: 2026-06-17 08:50
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.
References
security@golang.orghttps://go.dev/cl/652998
security@golang.orghttps://go.dev/issue/71988
security@golang.orghttps://groups.google.com/g/golang-announce/c/Y2uBTVKjBQk
security@golang.orghttps://pkg.go.dev/vuln/GO-2025-3563
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/04/04/4
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-783943.html
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "net/http/internal",
          "product": "net/http/internal",
          "programRoutines": [
            {
              "name": "readChunkLine"
            },
            {
              "name": "chunkedReader.Read"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.23.8",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.24.2",
              "status": "affected",
              "version": "1.24.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@golang.org"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "SENTRON 7KT PAC1261 Data Manager",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V2.1.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext."
    },
    {
      "lang": "es",
      "value": "El paquete net/http acepta incorrectamente un LF simple como terminador de l\u00ednea en l\u00edneas de datos fragmentados. Esto puede permitir el contrabando de solicitudes si se utiliza un servidor net/http junto con un servidor que acepta incorrectamente un LF simple como parte de una extensi\u00f3n fragmentada."
    }
  ],
  "id": "CVE-2025-22871",
  "lastModified": "2026-06-17T08:50:41.163",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-22871",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-18T14:57:03.151639Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-04-08T20:15:20.183",
  "references": [
    {
      "source": "security@golang.org",
      "url": "https://go.dev/cl/652998"
    },
    {
      "source": "security@golang.org",
      "url": "https://go.dev/issue/71988"
    },
    {
      "source": "security@golang.org",
      "url": "https://groups.google.com/g/golang-announce/c/Y2uBTVKjBQk"
    },
    {
      "source": "security@golang.org",
      "url": "https://pkg.go.dev/vuln/GO-2025-3563"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/04/4"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-783943.html"
    }
  ],
  "sourceIdentifier": "security@golang.org",
  "vulnStatus": "Deferred"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.