Vulnerability-Lookup

ubuntu-cve-2026-82522

Vulnerability from osv_ubuntu

Published

2026-09-02 18:21

Modified

2026-09-16 11:43

Summary

Details

libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.

Severity

5.4 (Medium)


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

5.3 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-82522	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-82522	REPORT
	https://github.com/libjxl/libjxl/pull/4885	REPORT
	https://github.com/libjxl/libjxl/commit/22ad80af1…	REPORT
	https://github.com/libjxl/libjxl/commit/22ad80af1…	REPORT
	https://github.com/libjxl/libjxl/releases/tag/v0.12.0	REPORT
	https://www.vulncheck.com/advisories/libjxl-conta…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjpegxl-java",
            "binary_version": "0.7.0-10.2ubuntu6.1"
          },
          {
            "binary_name": "libjxl-devtools",
            "binary_version": "0.7.0-10.2ubuntu6.1"
          },
          {
            "binary_name": "libjxl-tools",
            "binary_version": "0.7.0-10.2ubuntu6.1"
          },
          {
            "binary_name": "libjxl0.7",
            "binary_version": "0.7.0-10.2ubuntu6.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "jpeg-xl",
        "purl": "pkg:deb/ubuntu/jpeg-xl@0.7.0-10.2ubuntu6.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.0-10ubuntu2",
        "0.7.0-10.2ubuntu1",
        "0.7.0-10.2ubuntu4",
        "0.7.0-10.2ubuntu5",
        "0.7.0-10.2ubuntu6",
        "0.7.0-10.2ubuntu6.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjpegxl-java",
            "binary_version": "0.11.1-6ubuntu4.2"
          },
          {
            "binary_name": "libjxl-devtools",
            "binary_version": "0.11.1-6ubuntu4.2"
          },
          {
            "binary_name": "libjxl-gdk-pixbuf",
            "binary_version": "0.11.1-6ubuntu4.2"
          },
          {
            "binary_name": "libjxl-tools",
            "binary_version": "0.11.1-6ubuntu4.2"
          },
          {
            "binary_name": "libjxl0.11",
            "binary_version": "0.11.1-6ubuntu4.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "jpeg-xl",
        "purl": "pkg:deb/ubuntu/jpeg-xl@0.11.1-6ubuntu4.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.1-4",
        "0.11.1-6ubuntu1",
        "0.11.1-6ubuntu3",
        "0.11.1-6ubuntu4",
        "0.11.1-6ubuntu4.2"
      ]
    }
  ],
  "aliases": [],
  "details": "libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.",
  "id": "UBUNTU-CVE-2026-82522",
  "modified": "2026-09-16T11:43:09Z",
  "published": "2026-09-02T18:21:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-82522"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-82522"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libjxl/libjxl/pull/4885"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libjxl/libjxl/releases/tag/v0.12.0"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/libjxl-container-box-parser-integer-underflow-via-32-bit-size-truncation"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-82522"
  ]
}

CVE-2026-82522 (GCVE-0-2026-82522)

Vulnerability from cvelistv5 – Published: 2026-09-02 17:37 – Updated: 2026-09-02 18:01 X_Open Source

Title

libjxl < 0.12.0 Container Box Parser Integer Underflow via 32-bit Size Truncation

Summary

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

5.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 18:01 UTC

CWE

CWE-681 - Incorrect Conversion between Numeric Types

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/libjxl/libjxl/releases/tag/v0.12.0	release-notes
https://github.com/libjxl/libjxl/pull/4885	issue-tracking
https://github.com/libjxl/libjxl/commit/22ad80af1…	patch
https://www.vulncheck.com/advisories/libjxl-conta…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libjxl	libjxl	Affected: 0 , < 0.12.0 (semver)

Date Public

2026-07-01 00:00

Credits

Ali Raza (@locus-x64)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-82522",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T18:01:40.950570Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-02T18:01:58.760Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/libjxl/libjxl",
          "product": "libjxl",
          "repo": "https://github.com/libjxl/libjxl",
          "vendor": "libjxl",
          "versions": [
            {
              "lessThan": "0.12.0",
              "status": "affected",
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              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Ali Raza (@locus-x64)"
        }
      ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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        {
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            "attackComplexity": "LOW",
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            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
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            "userInteraction": "REQUIRED",
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          "scenarios": [
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          "descriptions": [
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      "providerMetadata": {
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      "references": [
        {
          "name": "Release Notes",
          "tags": [
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          ],
          "url": "https://github.com/libjxl/libjxl/releases/tag/v0.12.0"
        },
        {
          "name": "Pull Request",
          "tags": [
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          "url": "https://github.com/libjxl/libjxl/pull/4885"
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          "name": "Patch Commit",
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          "url": "https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68"
        },
        {
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/libjxl-container-box-parser-integer-underflow-via-32-bit-size-truncation"
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      "source": {
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        "x_open-source"
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      "title": "libjxl \u003c 0.12.0 Container Box Parser Integer Underflow via 32-bit Size Truncation",
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    "datePublished": "2026-09-02T17:37:47.649Z",
    "dateReserved": "2026-08-29T17:20:57.081Z",
    "dateUpdated": "2026-09-02T18:01:58.760Z",
    "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.

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.