CVE-2026-46637 (GCVE-0-2026-46637)

Vulnerability from cvelistv5 – Published: 2026-07-14 21:25 – Updated: 2026-07-14 21:25
VLAI
Title
Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`
Summary
Twig is a template language for PHP. Prior to 3.26.0, several filters in twig/markdown-extra and twig/cssinliner-extra are registered with is_safe => [all], causing Twig to treat plain text or HTML output as safe in HTML, JavaScript, CSS, URL, and other contexts where the output is not properly escaped. This issue is fixed in version 3.26.0.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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          "vendor": "twigphp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.26.0"
            }
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              "version": "\u003c 3.26.0"
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        }
      ],
      "metrics": [
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-116: Improper Encoding or Escaping of Output",
              "lang": "en",
              "type": "CWE"
            }
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        "dateUpdated": "2026-07-14T21:25:20.141Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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        },
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          "tags": [
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          "url": "https://github.com/twigphp/Twig/commit/e36489d3521ecbfc08bdcc61294302557035f14a"
        },
        {
          "name": "https://github.com/twigphp/Twig/releases/tag/v3.26.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/twigphp/Twig/releases/tag/v3.26.0"
        }
      ],
      "source": {
        "advisory": "GHSA-jv8m-2544-3pg3",
        "discovery": "UNKNOWN"
      },
      "title": "Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe =\u003e [\u0027all\u0027]`"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
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    "datePublished": "2026-07-14T21:25:20.141Z",
    "dateReserved": "2026-05-15T20:11:54.584Z",
    "dateUpdated": "2026-07-14T21:25:20.141Z",
    "state": "PUBLISHED"
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  }
}



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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

Author Source Type Date Other

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.