CVE-2026-123616 (GCVE-0-2026-123616)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:38 – Updated: 2026-11-08 01:38
VLAI
Title
imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader
Summary
imgproxy from 3.3.0 before 4.0.16 contains an unbounded memory allocation vulnerability in the ICO loader that fails to validate the data_size field. Attackers can supply a crafted 23-byte ICO file declaring a ~4GB data_size to trigger memory exhaustion and worker crashes without authentication.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
imgproxy imgproxy Affected: 3.3.0 , < 4.0.16 (semver)
Unaffected: 4.0.16 (semver)
    cpe:2.3:a:evilmartians:imgproxy:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-06 00:00
Credits
haileyok
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "imgproxy",
          "vendor": "imgproxy",
          "versions": [
            {
              "lessThan": "4.0.16",
              "status": "affected",
              "version": "3.3.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.0.16",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:evilmartians:imgproxy:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.0.16",
                  "versionStartIncluding": "3.3.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
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          "type": "reporter",
          "value": "haileyok"
        }
      ],
      "datePublic": "2026-10-06T00:00:00.000Z",
      "descriptions": [
        {
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          "value": "imgproxy from 3.3.0 before 4.0.16 contains an unbounded memory allocation vulnerability in the ICO loader that fails to validate the data_size field. Attackers can supply a crafted 23-byte ICO file declaring a ~4GB data_size to trigger memory exhaustion and worker crashes without authentication."
        }
      ],
      "metrics": [
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          "cvssV4_0": {
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
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            "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"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-08T01:38:40.389Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-mmq5-xm89-9pfg)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/imgproxy/imgproxy/security/advisories/GHSA-mmq5-xm89-9pfg"
        },
        {
          "name": "VulnCheck Advisory: imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/imgproxy-3.3.0-before-4.0.16-memory-exhaustion-dos-via-ico-loader"
        }
      ],
      "title": "imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-123616",
    "datePublished": "2026-11-08T01:38:40.389Z",
    "dateReserved": "2026-11-06T01:04:42.201Z",
    "dateUpdated": "2026-11-08T01:38:40.389Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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