PYSEC-2026-1238

Vulnerability from pysec - Published: 2026-07-07 16:03 - Updated: 2026-07-07 17:23
VLAI
Details

Chainlit versions prior to 2.8.5 contain an authorization bypass through user-controlled key vulnerability. If this vulnerability is exploited, threads may be viewed or thread ownership may be obtained by an attacker who can log in to the product.

Severity
4.2 (Medium)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Impacted products
Name purl
chainlit pkg:pypi/chainlit
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "chainlit",
        "purl": "pkg:pypi/chainlit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.0",
        "0.1.1",
        "0.1.101",
        "0.1.102",
        "0.1.103",
        "0.2.0",
        "0.2.1",
        "0.2.101",
        "0.2.102",
        "0.2.103",
        "0.2.104",
        "0.2.105",
        "0.2.106",
        "0.2.107",
        "0.2.108",
        "0.2.109",
        "0.2.110",
        "0.2.111",
        "0.3.0",
        "0.4.0",
        "0.4.1",
        "0.4.101",
        "0.4.2",
        "0.4.3",
        "0.5.0",
        "0.5.1",
        "0.5.2",
        "0.6.0",
        "0.6.1",
        "0.6.2",
        "0.6.3",
        "0.6.4",
        "0.6.401",
        "0.6.402",
        "0.7.0",
        "0.7.1",
        "0.7.2",
        "0.7.3",
        "0.7.301",
        "0.7.400",
        "0.7.500",
        "0.7.501",
        "0.7.600rc0",
        "0.7.600rc1",
        "0.7.601rc0",
        "0.7.602",
        "0.7.602rc0",
        "0.7.603",
        "0.7.604",
        "0.7.604rc0",
        "0.7.604rc1",
        "0.7.604rc2",
        "0.7.700",
        "1.0.0",
        "1.0.0rc0",
        "1.0.0rc1",
        "1.0.0rc2",
        "1.0.0rc3",
        "1.0.100",
        "1.0.101",
        "1.0.200",
        "1.0.300",
        "1.0.301",
        "1.0.400",
        "1.0.401",
        "1.0.500",
        "1.0.501",
        "1.0.502",
        "1.0.503",
        "1.0.504",
        "1.0.505",
        "1.0.506",
        "1.1.0",
        "1.1.0rc0",
        "1.1.0rc1",
        "1.1.101",
        "1.1.200",
        "1.1.201",
        "1.1.202",
        "1.1.300",
        "1.1.300rc0",
        "1.1.300rc1",
        "1.1.300rc2",
        "1.1.300rc3",
        "1.1.300rc4",
        "1.1.300rc5",
        "1.1.301",
        "1.1.302",
        "1.1.303",
        "1.1.304",
        "1.1.305",
        "1.1.306",
        "1.1.400",
        "1.1.400rc0",
        "1.1.400rc1",
        "1.1.401",
        "1.1.402",
        "1.1.403rc0",
        "1.1.404",
        "1.2.0",
        "1.2.0rc0",
        "1.3.0",
        "1.3.0rc0",
        "1.3.0rc1",
        "1.3.1",
        "1.3.2",
        "2.0.0",
        "2.0.1",
        "2.0.2",
        "2.0.3",
        "2.0.4",
        "2.0.5",
        "2.0.6",
        "2.0.601",
        "2.0.602",
        "2.0.603",
        "2.0.dev0",
        "2.0.dev1",
        "2.0.dev2",
        "2.0rc0",
        "2.0rc1",
        "2.1.0",
        "2.1.1",
        "2.1.2",
        "2.2.0",
        "2.2.1",
        "2.3.0",
        "2.4.0",
        "2.4.0rc0",
        "2.4.1",
        "2.4.2",
        "2.4.201",
        "2.4.3",
        "2.4.301",
        "2.4.302",
        "2.4.400",
        "2.5.5",
        "2.6.0",
        "2.6.1",
        "2.6.2",
        "2.6.3",
        "2.6.4",
        "2.6.5",
        "2.6.6",
        "2.6.7",
        "2.6.8",
        "2.6.9",
        "2.7.0",
        "2.7.1",
        "2.7.1.1",
        "2.7.2",
        "2.8.0",
        "2.8.1",
        "2.8.2",
        "2.8.3",
        "2.8.4"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-68492",
    "GHSA-v492-6xx2-p57g"
  ],
  "details": "Chainlit versions prior to 2.8.5 contain an authorization bypass through user-controlled key vulnerability. If this vulnerability is exploited, threads may be viewed or thread ownership may be obtained by an attacker who can log in to the product.",
  "id": "PYSEC-2026-1238",
  "modified": "2026-07-07T17:23:53.606108Z",
  "published": "2026-07-07T16:03:18.754455Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68492"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Chainlit/chainlit/pull/2637"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Chainlit/chainlit/commit/8f1153db439eca58ae5c50c8276ba6fdd311448e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Chainlit/chainlit"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Chainlit/chainlit/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Chainlit/chainlit/releases/tag/2.8.5"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN34964581"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/chainlit"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-v492-6xx2-p57g"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Chainlit contains an authorization bypass vulnerability"
}



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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

  • 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.