CVE-2025-30204 (GCVE-0-2025-30204)

Vulnerability from cvelistv5 – Published: 2025-03-21 21:42 – Updated: 2025-04-10 13:03
VLAI
Title
jwt-go allows excessive memory allocation during header parsing
Summary
golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
Impacted products
Vendor Product Version
golang-jwt jwt Affected: >= 3.2.0, < 4.5.2
Affected: >= 5.0.0-rc.1, < 5.2.2
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-30204",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-24T14:10:18.281694Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-24T14:10:35.776Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-04-04T23:03:13.309Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20250404-0002/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jwt",
          "vendor": "golang-jwt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.2.0, \u003c 4.5.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0-rc.1, \u003c 5.2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer  followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function\u0027s argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-405",
              "description": "CWE-405: Asymmetric Resource Consumption (Amplification)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-10T13:03:19.897Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp"
        },
        {
          "name": "https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3"
        },
        {
          "name": "https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb"
        }
      ],
      "source": {
        "advisory": "GHSA-mh63-6h87-95cp",
        "discovery": "UNKNOWN"
      },
      "title": "jwt-go allows excessive memory allocation during header parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-30204",
    "datePublished": "2025-03-21T21:42:01.382Z",
    "dateReserved": "2025-03-18T18:15:13.849Z",
    "dateUpdated": "2025-04-10T13:03:19.897Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-30204",
      "date": "2026-06-10",
      "epss": "0.00083",
      "percentile": "0.24268"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-30204\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-03-21T22:15:26.420\",\"lastModified\":\"2025-04-10T13:15:52.097\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer  followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function\u0027s argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.\"},{\"lang\":\"es\",\"value\":\"golang-jwt es una implementaci\u00f3n de Go de tokens web JSON. En versiones anteriores a la 5.2.2 y la 4.5.2, la funci\u00f3n parse.ParseUnverified divide (mediante una llamada a strings.Split) su argumento (que contiene datos no confiables) en puntos. Como resultado, ante una solicitud maliciosa cuyo encabezado de autorizaci\u00f3n consiste en \\\"Bearer\\\" seguido de muchos puntos, una llamada a dicha funci\u00f3n genera asignaciones de O(n) bytes (donde n representa la longitud del argumento de la funci\u00f3n), con un factor constante de aproximadamente 16. Este problema se solucion\u00f3 en las versiones 5.2.2 y 4.5.2.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-405\"}]}],\"references\":[{\"url\":\"https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20250404-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20250404-0002/\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-04-04T23:03:13.309Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-30204\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-24T14:10:18.281694Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-24T14:10:25.565Z\"}}], \"cna\": {\"title\": \"jwt-go allows excessive memory allocation during header parsing\", \"source\": {\"advisory\": \"GHSA-mh63-6h87-95cp\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"golang-jwt\", \"product\": \"jwt\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 3.2.0, \u003c 4.5.2\"}, {\"status\": \"affected\", \"version\": \"\u003e= 5.0.0-rc.1, \u003c 5.2.2\"}]}], \"references\": [{\"url\": \"https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp\", \"name\": \"https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3\", \"name\": \"https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb\", \"name\": \"https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer  followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function\u0027s argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-405\", \"description\": \"CWE-405: Asymmetric Resource Consumption (Amplification)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-04-10T13:03:19.897Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-30204\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-10T13:03:19.897Z\", \"dateReserved\": \"2025-03-18T18:15:13.849Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-03-21T21:42:01.382Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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.


Detection rules are retrieved from Rulezet.