osv-2026-777
Vulnerability from osv_ossfuzz
Published
2026-05-19 00:12
Modified
2026-05-19 00:12
Summary
Heap-buffer-overflow in md_is_link_title
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=514122612

Crash type: Heap-buffer-overflow READ 1
Crash state:
md_is_link_title
md_analyze_inlines
md_process_normal_block_contents
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "28e2fbd5c0c81448c6b543bd5b987ed7630bfbd5:b8d9ee1135b8f7f26df3e86a7afb04a0ccbc55b9",
        "introduced_range": "07712a59a4cdb66170d608125ce3a191ffa3d4c7:345666722d965072c2c94bbb08b2ae91385c1592"
      },
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "md4c",
        "purl": "pkg:generic/md4c"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "ed89abed05845225cdfe2c94a49ec13a37b7578f"
            },
            {
              "fixed": "b8d9ee1135b8f7f26df3e86a7afb04a0ccbc55b9"
            }
          ],
          "repo": "https://github.com/mity/md4c",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=514122612\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nmd_is_link_title\nmd_analyze_inlines\nmd_process_normal_block_contents\n```\n",
  "id": "OSV-2026-777",
  "modified": "2026-05-19T00:12:57.079060Z",
  "published": "2026-05-19T00:12:57.078724Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=514122612"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-buffer-overflow in md_is_link_title"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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