Vulnerability-Lookup

UBUNTU-CVE-2026-13523 (CVE-2026-13523)

Vulnerability from osv_ubuntu – Published: 2026-06-29 03:16 – Updated: 2026-06-29 03:16 – Source website

Details

A weakness has been identified in GPAC up to 26.02.0. This affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. Executing a manipulation can lead to highly compressed data. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 297f2d8d1f493d8b241330533cd47f7da758aeb3. A patch should be applied to remediate this issue. The vendor confirms: "We added a check on inflate output size, if it surpasses 32 times the input size we stop in error. This value could be adjusted later."

Severity

3.3 (Low)


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

1.9 (Low)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-13523	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-13523	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
          },
          {
            "binary_name": "libgpac2",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@0.5.0+svn4288~dfsg1-4ubuntu1+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.0+svn4288~dfsg1-1ubuntu1",
        "0.5.0+svn4288~dfsg1-4",
        "0.5.0+svn4288~dfsg1-4ubuntu1",
        "0.5.0+svn4288~dfsg1-4ubuntu1+esm1",
        "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
          },
          {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.2-426-gc5ad4e4+dfsg5-1build1",
        "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1",
        "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.2-426-gc5ad4e4+dfsg5-3",
        "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1",
        "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.2-426-gc5ad4e4+dfsg5-4ubuntu1",
        "0.5.2-426-gc5ad4e4+dfsg5-5",
        "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "libgpac11",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@2.0.0+dfsg1-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.1+dfsg1-4",
        "1.0.1+dfsg1-5",
        "2.0.0+dfsg1-2",
        "2.0.0+dfsg1-2ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gpac",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
          },
          {
            "binary_name": "gpac-modules-base",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libgpac12t64",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "gpac",
        "purl": "pkg:deb/ubuntu/gpac@2.2.1+dfsg1-3.1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-3",
        "2.2.1+dfsg1-3.1",
        "2.2.1+dfsg1-3.1build1",
        "2.2.1+dfsg1-3.1build2",
        "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "A weakness has been identified in GPAC up to 26.02.0. This affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. Executing a manipulation can lead to highly compressed data. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 297f2d8d1f493d8b241330533cd47f7da758aeb3. A patch should be applied to remediate this issue. The vendor confirms: \"We added a check on inflate output size, if it surpasses 32 times the input size we stop in error. This value could be adjusted later.\"",
  "id": "UBUNTU-CVE-2026-13523",
  "modified": "2026-06-29T03:16:00Z",
  "published": "2026-06-29T03:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-13523"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-13523"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-13523"
  ]
}

CVE-2026-13523 (GCVE-0-2026-13523)

Vulnerability from cvelistv5 – Published: 2026-06-29 01:30 – Updated: 2026-06-29 12:58 X_Open Source

Title

GPAC ISOBMFF base_encoding.c data amplification

Summary

Severity

4.8 (Medium)


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

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-29 12:58 UTC

CWE

CWE-409 - Highly Compressed Data
CWE-404 - Denial of Service

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/vuln/374531	vdb-entry
https://vuldb.com/vuln/374531/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13523	third-party-advisory
https://vuldb.com/submit/840159	third-party-advisory
https://github.com/gpac/gpac/issues/3588	exploitissue-tracking
https://github.com/gpac/gpac/pull/3589	issue-trackingpatch
https://github.com/gpac/gpac/commit/297f2d8d1f493…	patch
https://github.com/gpac/gpac/	product

Impacted products

1 product

Vendor	Product	Version
n/a	GPAC	Affected: 26.02 cpe:2.3:a:gpac:gpac::::::::

Credits

Fantasy (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-13523",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-29T12:58:45.988130Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-29T12:58:52.866Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "ISOBMFF Parser"
          ],
          "product": "GPAC",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "26.02"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Fantasy (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A weakness has been identified in GPAC up to 26.02.0. This affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. Executing a manipulation can lead to highly compressed data. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 297f2d8d1f493d8b241330533cd47f7da758aeb3. A patch should be applied to remediate this issue. The vendor confirms: \"We added a check on inflate output size, if it surpasses 32 times the input size we stop in error. This value could be adjusted later.\""
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-409",
              "description": "Highly Compressed Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-404",
              "description": "Denial of Service",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-29T01:30:08.539Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-374531 | GPAC ISOBMFF base_encoding.c data amplification",
          "tags": [
            "vdb-entry"
          ],
          "url": "https://vuldb.com/vuln/374531"
        },
        {
          "name": "VDB-374531 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/374531/cti"
        },
        {
          "name": "CVE-2026-13523 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-13523"
        },
        {
          "name": "Submit #840159 | GPAC \u003c= 26.02.0 Uncontrolled Resource Consumption",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/840159"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/gpac/gpac/issues/3588"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/gpac/gpac/pull/3589"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/gpac/gpac/commit/297f2d8d1f493d8b241330533cd47f7da758aeb3"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/gpac/gpac/"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-06-28T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-06-28T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-06-28T09:52:25.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "GPAC ISOBMFF base_encoding.c data amplification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-13523",
    "datePublished": "2026-06-29T01:30:08.539Z",
    "dateReserved": "2026-06-28T07:47:20.977Z",
    "dateUpdated": "2026-06-29T12:58:52.866Z",
    "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.

Action not permitted

UBUNTU-CVE-2026-13523 (CVE-2026-13523)

CVE-2026-13523 (GCVE-0-2026-13523)

Tags

Sightings

Nomenclature

Related by attack behaviour