BREW-LIBBI-CVE-2026-5090 (CVE-2026-5090)

Vulnerability from osv_homebrew – Published: 2026-08-13 09:40 – Updated: 2026-09-20 17:50 – Source website
VLAI
Summary
Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected
Details

Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected.

The html_filter function did not escape single quotes. HTML attributes inside of single quotes could be have code injected. For example, the variable "var" in

<a id='ref' title='[% var | html %]'>

would not be properly escaped. An attacker could insert some limited HTML and JavaScript, for example,

var = " ' onclick='while (true) { alert(1) }'"

Note that arbitrary HTML and JavaScript would be difficult to inject, because angle brackets, ampersands and double-quotes would still be escaped.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "Template",
        "resource_purl": "pkg:cpan/ABW/Template-Toolkit@2.27",
        "upstream_fixed_in": "3.103"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "libbi",
        "purl": "pkg:brew/libbi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "medium",
    "source": "matched",
    "strategy": "cpansa",
    "upstream_evidence": [
      {
        "ecosystem": "CPAN",
        "key": "pkg:cpan/ABW/Template-Toolkit@2.27",
        "name": "Template-Toolkit",
        "resource": "Template",
        "strategy": "cpansa",
        "subject_version": "2.27"
      }
    ]
  },
  "details": "Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected.\n\nThe html_filter function did not escape single quotes. HTML attributes inside of single quotes could be have code injected.  For example, the variable \"var\" in\n\n    \u003ca id=\u0027ref\u0027 title=\u0027[% var | html %]\u0027\u003e\n\nwould not be properly escaped. An attacker could insert some limited HTML and JavaScript, for example,\n\n    var = \" \u0027 onclick=\u0027while (true) { alert(1) }\u0027\"\n\nNote that arbitrary HTML and JavaScript would be difficult to inject, because angle brackets, ampersands and double-quotes would still be escaped.",
  "id": "BREW-libbi-CVE-2026-5090",
  "modified": "2026-09-20T17:50:56Z",
  "published": "2026-08-13T09:40:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/19/40"
    },
    {
      "type": "WEB",
      "url": "https://cpan.org/modules"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5090.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://metacpan.org/release/TODDR/Template-Toolkit-3.103/changes"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5090"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/abw/Template2/issues/327"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cpan-authors/Template2/commit/ca539f49f6ffd1c2b7d9ef4f48f6b88292418734.patch"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/abw/Template2"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected",
  "upstream": [
    "CVE-2026-5090"
  ]
}



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