Vulnerability from cleanstart
Published
2026-06-10 01:00
Modified
2026-06-09 07:02
Summary
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU
Details

Multiple security vulnerabilities affect the prometheus-operator package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU. See references for individual vulnerability details.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "prometheus-operator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.91.0-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Multiple security vulnerabilities affect the prometheus-operator package. Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-EX51963",
  "modified": "2026-06-09T07:02:56Z",
  "published": "2026-06-10T01:00:54.827821Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-EX51963.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-27145"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42504"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42507"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42507"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU",
  "upstream": [
    "CVE-2026-27145",
    "CVE-2026-42504",
    "CVE-2026-42507"
  ]
}


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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.