GHSA-GX2M-MCC2-R4P3

Vulnerability from github – Published: 2026-04-24 20:43 – Updated: 2026-05-12 13:27
VLAI
Summary
wlc: print_html outputs API data without HTML escaping
Details

Impact

The HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser.

Patches

  • https://github.com/WeblateOrg/wlc/pull/1327

Workarounds

The only vulnerable code path is HTML output which is opt-in.

References

Weblate thanks @fg0x0 for reporting this on GitHub.

Severity
5.1 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "wlc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42150"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-24T20:43:30Z",
    "nvd_published_at": "2026-05-08T04:16:18Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser.\n\n\n### Patches\n* https://github.com/WeblateOrg/wlc/pull/1327\n\n### Workarounds\nThe only vulnerable code path is HTML output which is opt-in.\n\n### References\nWeblate thanks @fg0x0 for reporting this on GitHub.",
  "id": "GHSA-gx2m-mcc2-r4p3",
  "modified": "2026-05-12T13:27:31Z",
  "published": "2026-04-24T20:43:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42150"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/wlc/pull/1327"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/WeblateOrg/wlc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/wlc/releases/tag/2.0.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wlc: print_html outputs API data without HTML escaping"
}


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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

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