Vulnerability-Lookup

CVE-2026-33809 (GCVE-0-2026-33809)

Vulnerability from cvelistv5 – Published: 2026-03-25 18:24 – Updated: 2026-04-06 21:12

Title

OOM from malicious IFD offset in golang.org/x/image/tiff

Summary

A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-25 20:05 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

Go Google root

References

3 references

URL	Tags
https://go.dev/cl/757660
https://go.dev/issue/78267
https://pkg.go.dev/vuln/GO-2026-4815

Impacted products

1 product

Vendor	Product	Version	CPE status
golang.org/x/image	golang.org/x/image/tiff	Affected: 0 , < 0.38.0 (semver)	guessed

Credits

Andy Gill, ZephrSec Ltd

Show details on NVD website

JSON

To clipboard

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              "attackVector": "NETWORK",
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      ],
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      "cve": "CVE-2026-33809",
      "id": "CVE-2026-33809",
      "initial_release_date": "2026-03-25T18:24:04.222000+00:00",
      "product_status:fixed": "8",
      "product_status:known_affected": "35",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "golang: golang.org/x/image/tiff: golang.org/x/image/tiff: Denial of Service via maliciously crafted TIFF file",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33809.json",
      "version": "3"
    },
    "suse_vex": {
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      "initial_release_date": "2026-03-26T14:43:09Z",
      "product_status:recommended": "20",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-33809",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-33809.json",
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    },
    "vulnrichment": {
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}

RHSA-2026:7385

Vulnerability from csaf_redhat - Published: 2026-04-10 14:24 - Updated: 2026-09-16 15:55

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Scope

38 vulnerabilities in this advisory, including CVE-2026-33809.

CVE-2026-33809

A flaw was found in golang.org/x/image/tiff. A remote attacker could exploit this vulnerability by providing a maliciously crafted Tagged Image File Format (TIFF) file. This could cause the image decoding process to attempt to allocate up to 4 gigabytes (GiB) of memory. The excessive resource consumption or an out-of-memory error would lead to a Denial of Service (DoS) condition.

6.5 (Medium)


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

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2026:7385

Open the full advisory

ubuntu-cve-2026-33809

Vulnerability from osv_ubuntu

Published

2026-03-25 19:16

Modified

2026-05-20 15:27

Summary

Details

A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.

Severity

5.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-33809	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-33809	REPORT
	https://github.com/golang/go/issues/78267	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.0~git20170523.0.426cfd8-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "golang-golang-x-image",
        "purl": "pkg:deb/ubuntu/golang-golang-x-image@0.0~git20170523.0.426cfd8-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20170523.0.426cfd8-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.0~git20200119.58c2397-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "golang-golang-x-image",
        "purl": "pkg:deb/ubuntu/golang-golang-x-image@0.0~git20200119.58c2397-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20190703.d6a02ce-1",
        "0.0~git20200119.58c2397-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.0~git20211028.6944b10-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "golang-golang-x-image",
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      },
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            {
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            }
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        "0.0~git20210628.a66eb64-1",
        "0.0~git20211028.6944b10-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.15.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "golang-golang-x-image",
        "purl": "pkg:deb/ubuntu/golang-golang-x-image@0.15.0-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.0-1",
        "0.13.0-1",
        "0.14.0-1",
        "0.15.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.18.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "golang-golang-x-image",
        "purl": "pkg:deb/ubuntu/golang-golang-x-image@0.18.0-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
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        "0.18.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-image-dev",
            "binary_version": "0.35.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "golang-golang-x-image",
        "purl": "pkg:deb/ubuntu/golang-golang-x-image@0.35.0-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.18.0-1",
        "0.32.0-1",
        "0.35.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.",
  "id": "UBUNTU-CVE-2026-33809",
  "modified": "2026-05-20T15:27:22Z",
  "published": "2026-03-25T19:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33809"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33809"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/golang/go/issues/78267"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33809"
  ]
}

WID-SEC-W-2026-1653

Vulnerability from csaf_certbund - Published: 2026-05-21 22:00 - Updated: 2026-06-16 22:00

Summary

Golang Go-Module (Net, Image, Crypto: Mehrere Schwachstellen

Severity

Mittel

Scope

21 vulnerabilities in this advisory, including CVE-2026-33809.

CVE-2026-33809

Known affected: 6 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-33809 (GCVE-0-2026-33809)

RHSA-2026:7385

ubuntu-cve-2026-33809

Vulnerability from osv_ubuntu

WID-SEC-W-2026-1653

Tags

Sightings

Nomenclature

Related by attack behaviour