Exiv2: Integer Underflow in LoaderNative::getData() Causes Heap Buffer Overflow

{
  "id": "c2b23d72c38b0f3fa333339dd83e0ac630e2410da1dae8d9c0efc5ba4429f640",
  "url": "https://osv.dev/vulnerability/CVE-2026-27596",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Exiv2: Integer Underflow in LoaderNative::getData() Causes Heap Buffer Overflow",
    "summary": "Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. Prior to version 0.28.8, an out-of-bounds read was found in Exiv2. The vulnerability is in the preview component, which is only triggered when running Exiv2 with an extra command line argument, like -pp. The out-of-bounds read is at a 4GB offset, which usually causes Exiv2 to crash. This issue has been patched in version 0.28.8.",
    "evidence": "osv:CVE-2026-27596",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-27596",
      "aliases": [
        "CVE-2026-27596",
        "GHSA-3wgv-fg4w-75x7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/exiv2/exiv2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2cd987a731236037b6b78cbff897d08685a8ef49"
                },
                {
                  "fixed": "eaa9e21aabe06b3f91cfe66686f5ebc3ca3c0ed4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:exiv2:exiv2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.28.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "eaa9e21aabe06b3f91cfe66686f5ebc3ca3c0ed4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.28.7",
            "nightly",
            "v0.28.6",
            "v0.28.5",
            "v0.28.4",
            "v0.28.3",
            "v0.28.2",
            "nightly-0.28.x",
            "v0.28.1",
            "v0.28.0",
            "testIPO_exiv2-xmp-OBJECT",
            "testIPO_3",
            "testIPO_2",
            "testIPO",
            "testNoConanCache",
            "v0.27.4-RC2",
            "v0.27.4-RC1",
            "v0.27.3",
            "v0.27.3-RC2",
            "v0.27.3-RC1",
            "v0.27.2",
            "v0.27.2-RC3",
            "v0.27.2-RC2",
            "v0.27.2-RC1",
            "0.27-RC2",
            "v0.27.1",
            "0.27.1",
            "v0.27.1-RC1",
            "v0.27.0",
            "0.27",
            "0.27-RC3",
            "v0.27-RC1",
            "v0.26",
            "v0.25",
            "v0.24",
            "v0.23.1",
            "v0.23",
            "v0.22",
            "v0.21.1",
            "v0.21",
            "v0.20",
            "v0.19",
            "v0.18.2",
            "v0.18.1",
            "v0.18",
            "v0.18-pre2",
            "v0.18-pre1",
            "v0.17.1",
            "v0.17",
            "v0.16",
            "v0.16-pre1",
            "v0.15",
            "v0.14",
            "v0.13",
            "v0.12",
            "v0.11",
            "v0.10",
            "v0.9.1",
            "v0.9",
            "v0.8",
            "v0.7",
            "v0.6.2",
            "v0.6.1",
            "v0.6",
            "v0.5",
            "v0.4",
            "v0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27596.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.516064396Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27596.json",
        "https://github.com/Exiv2/exiv2/security/advisories/GHSA-3wgv-fg4w-75x7",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27596",
        "https://github.com/Exiv2/exiv2/issues/3511",
        "https://github.com/Exiv2/exiv2/commit/eaa9e21aabe06b3f91cfe66686f5ebc3ca3c0ed4",
        "https://github.com/Exiv2/exiv2/pull/3512"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-125",
          "CWE-191"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27596.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-27596",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520188,
  "published_at": "2026-03-02T19:40:48.559+00:00"
}