Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-05-06 08:50

Modified

2026-05-06 09:13

Summary

Prometheus: remote read endpoint allows denial of service via crafted snappy payload

Details

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "prometheus",
        "purl": "pkg:bitnami/prometheus"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.3"
            },
            {
              "introduced": "3.6.0"
            },
            {
              "fixed": "3.11.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42154"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:go:*:*"
    ],
    "severity": "High"
  },
  "details": "Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.",
  "id": "BIT-prometheus-2026-42154",
  "modified": "2026-05-06T09:13:13.573Z",
  "published": "2026-05-06T08:50:03.007Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/prometheus/prometheus/pull/18584"
    },
    {
      "type": "WEB",
      "url": "https://github.com/prometheus/prometheus/pull/18585"
    },
    {
      "type": "WEB",
      "url": "https://github.com/prometheus/prometheus/releases/tag/v3.11.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/prometheus/prometheus/releases/tag/v3.5.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42154"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Prometheus: remote read endpoint allows denial of service via crafted snappy payload"
}

CVE-2026-42154 (GCVE-0-2026-42154)

Vulnerability from cvelistv5 – Published: 2026-05-04 18:13 – Updated: 2026-05-04 20:19

Title

Prometheus: remote read endpoint allows denial of service via crafted snappy payload

Summary

Severity ?

7.5 (High)


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

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

URL

Tags

	https://github.com/prometheus/prometheus/security…	x_refsource_CONFIRM
	https://github.com/prometheus/prometheus/pull/18584	x_refsource_MISC
	https://github.com/prometheus/prometheus/pull/18585	x_refsource_MISC
	https://github.com/prometheus/prometheus/releases…	x_refsource_MISC
	https://github.com/prometheus/prometheus/releases…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	prometheus	prometheus	Affected: < 3.5.3 Affected: >= 3.6.0, < 3.11.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42154",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-04T20:18:48.754025Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-04T20:19:13.876Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "prometheus",
          "vendor": "prometheus",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.5.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.6.0, \u003c 3.11.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3."
        }
      ],
      "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-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-04T18:13:12.340Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm"
        },
        {
          "name": "https://github.com/prometheus/prometheus/pull/18584",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/pull/18584"
        },
        {
          "name": "https://github.com/prometheus/prometheus/pull/18585",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/pull/18585"
        },
        {
          "name": "https://github.com/prometheus/prometheus/releases/tag/v3.11.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v3.11.3"
        },
        {
          "name": "https://github.com/prometheus/prometheus/releases/tag/v3.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v3.5.3"
        }
      ],
      "source": {
        "advisory": "GHSA-8rm2-7qqf-34qm",
        "discovery": "UNKNOWN"
      },
      "title": "Prometheus: remote read endpoint allows denial of service via crafted snappy payload"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42154",
    "datePublished": "2026-05-04T18:13:12.340Z",
    "dateReserved": "2026-04-24T17:15:21.835Z",
    "dateUpdated": "2026-05-04T20:19:13.876Z",
    "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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-42154 (GCVE-0-2026-42154)

Tags

Sightings

Nomenclature