Vulnerability-Lookup

GHSA-2RVX-JPM5-G848

Vulnerability from github – Published: 2026-03-11 21:31 – Updated: 2026-03-11 21:31

Details

A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-3949"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-11T19:16:05Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.",
  "id": "GHSA-2rvx-jpm5-g848",
  "modified": "2026-03-11T21:31:03Z",
  "published": "2026-03-11T21:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3949"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/issues/1712"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biniamf/pocs/tree/main/libheif_vvdec"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.350381"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.350381"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.765979"
    }
  ],
  "schema_version": "1.4.0",
  "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-3949 (GCVE-0-2026-3949)

Vulnerability from cvelistv5 – Published: 2026-03-11 18:32 – Updated: 2026-03-11 19:38 X_Open Source

Title

strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds

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 2026-03-11 19:37 UTC

CWE

CWE-125 - Out-of-Bounds Read
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/?id.350381	vdb-entrytechnical-description
https://vuldb.com/?ctiid.350381	signaturepermissions-required
https://vuldb.com/?submit.765979	third-party-advisory
https://github.com/strukturag/libheif/issues/1712	issue-tracking
https://github.com/strukturag/libheif/issues/1712…	issue-tracking
https://github.com/biniamf/pocs/tree/main/libheif_vvdec	exploit
https://github.com/strukturag/libheif/commit/b97c…	patch
https://github.com/strukturag/libheif/	product

Impacted products

1 product

Vendor	Product	Version
strukturag	libheif	Affected: 1.21.0 Affected: 1.21.1 Affected: 1.21.2

Credits

biniam (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3949",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-11T19:37:14.390113Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-11T19:38:00.870Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "HEIF File Parser"
          ],
          "product": "libheif",
          "vendor": "strukturag",
          "versions": [
            {
              "status": "affected",
              "version": "1.21.0"
            },
            {
              "status": "affected",
              "version": "1.21.1"
            },
            {
              "status": "affected",
              "version": "1.21.2"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "biniam (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue."
        }
      ],
      "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-125",
              "description": "Out-of-Bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-11T18:32:09.358Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-350381 | strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.350381"
        },
        {
          "name": "VDB-350381 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.350381"
        },
        {
          "name": "Submit #765979 | strukturag libheif 1.21.2 Out-of-Bounds Read",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.765979"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/strukturag/libheif/issues/1712"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/biniamf/pocs/tree/main/libheif_vvdec"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/strukturag/libheif/"
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      "tags": [
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          "time": "2026-03-11T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-03-11T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-03-11T13:04:43.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-3949",
    "datePublished": "2026-03-11T18:32:09.358Z",
    "dateReserved": "2026-03-11T11:59:39.639Z",
    "dateUpdated": "2026-03-11T19:38:00.870Z",
    "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.

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.

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GHSA-2RVX-JPM5-G848

CVE-2026-3949 (GCVE-0-2026-3949)

Tags

Sightings

Nomenclature

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