GHSA-RGQC-3X5P-6GWG

Vulnerability from github – Published: 2026-08-24 19:47 – Updated: 2026-08-24 19:47
VLAI
Summary
postgres-protocol: Panic decoding a malformed `hstore` value allows denial of service
Details

A malicious or compromised server can return a binary hstore value with an invalid internal length field, causing the client to panic while decoding it.

Applications that connect only to a trusted database are not exposed; the risk applies to clients that may connect to untrusted or user-supplied servers, or whose connection can be intercepted by a man-in-the-middle.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "postgres-protocol"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-248"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-24T19:47:49Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "A malicious or compromised server can return a binary `hstore` value with an\ninvalid internal length field, causing the client to panic while decoding it.\n\nApplications that connect only to a trusted database are not exposed; the risk\napplies to clients that may connect to untrusted or user-supplied servers, or\nwhose connection can be intercepted by a man-in-the-middle.",
  "id": "GHSA-rgqc-3x5p-6gwg",
  "modified": "2026-08-24T19:47:49Z",
  "published": "2026-08-24T19:47:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rust-postgres/rust-postgres/commit/a7cf84b5c46431cbca9d8ff50508c23f446efa7d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-postgres/rust-postgres"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-postgres/rust-postgres/releases/tag/postgres-protocol-v0.6.12"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0180.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "postgres-protocol: Panic decoding a malformed `hstore` value allows denial of service"
}



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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.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.