osv-2026-959
Vulnerability from osv_ossfuzz
Published
2026-06-23 00:15
Modified
2026-06-23 00:15
Summary
Heap-use-after-free in Wt::Http::Request::parseFormUrlEncoded
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526224351

Crash type: Heap-use-after-free READ 8
Crash state:
Wt::Http::Request::parseFormUrlEncoded
Wt::CgiParser::parse
fuzz-cgi.C
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "2379295442b60a75f20abc6955b11f07d431881c:066d53243eff54a95a2951ee26613c91d74ac613"
      },
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "wt",
        "purl": "pkg:generic/wt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2379295442b60a75f20abc6955b11f07d431881c"
            },
            {
              "fixed": "066d53243eff54a95a2951ee26613c91d74ac613"
            }
          ],
          "repo": "https://github.com/emweb/wt.git",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526224351\n\n```\nCrash type: Heap-use-after-free READ 8\nCrash state:\nWt::Http::Request::parseFormUrlEncoded\nWt::CgiParser::parse\nfuzz-cgi.C\n```\n",
  "id": "OSV-2026-959",
  "modified": "2026-06-23T00:15:52.533654Z",
  "published": "2026-06-23T00:15:52.533371Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526224351"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-use-after-free in Wt::Http::Request::parseFormUrlEncoded"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.