CVE-2026-32289 (GCVE-0-2026-32289)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:20
VLAI
Title
JsBraceDepth Context Tracking Bugs (XSS) in html/template
Summary
Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Go
References
Impacted products
Vendor Product Version
Go standard library html/template Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.1,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-32289",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-13T17:48:22.714020Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-13T18:20:46.377Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "html/template",
          "product": "html/template",
          "programRoutines": [
            {
              "name": "context.String"
            },
            {
              "name": "context.mangle"
            },
            {
              "name": "escaper.escapeBranch"
            },
            {
              "name": "Error.Error"
            },
            {
              "name": "HTMLEscaper"
            },
            {
              "name": "JSEscape"
            },
            {
              "name": "JSEscapeString"
            },
            {
              "name": "JSEscaper"
            },
            {
              "name": "ParseFS"
            },
            {
              "name": "ParseFiles"
            },
            {
              "name": "ParseGlob"
            },
            {
              "name": "Template.AddParseTree"
            },
            {
              "name": "Template.Clone"
            },
            {
              "name": "Template.DefinedTemplates"
            },
            {
              "name": "Template.Execute"
            },
            {
              "name": "Template.ExecuteTemplate"
            },
            {
              "name": "Template.Funcs"
            },
            {
              "name": "Template.Parse"
            },
            {
              "name": "Template.ParseFS"
            },
            {
              "name": "Template.ParseFiles"
            },
            {
              "name": "Template.ParseGlob"
            },
            {
              "name": "URLQueryEscaper"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.25.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.2",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:56.297Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/763762"
        },
        {
          "url": "https://go.dev/issue/78331"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4865"
        }
      ],
      "title": "JsBraceDepth Context Tracking Bugs (XSS) in html/template"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-32289",
    "datePublished": "2026-04-08T01:06:56.297Z",
    "dateReserved": "2026-03-11T16:38:46.557Z",
    "dateUpdated": "2026-04-13T18:20:46.377Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-32289",
      "date": "2026-07-31",
      "epss": "0.0029",
      "percentile": "0.2128"
    },
    "microsoft_vex": {
      "current_release_date": "2026-06-23T14:43:08.000Z",
      "cve": "CVE-2026-32289",
      "id": "msrc_CVE-2026-32289",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "product_status:known_affected": "7",
      "product_status:known_not_affected": "8",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "JsBraceDepth Context Tracking Bugs (XSS) in html/template",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-32289.json",
      "version": "5"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-32289\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2026-04-08T02:16:03.820\",\"lastModified\":\"2026-07-25T10:10:00.167\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.\"},{\"lang\":\"es\",\"value\":\"El contexto no se segu\u00eda correctamente a trav\u00e9s de las ramas de la plantilla para los literales de plantilla de JS, lo que llev\u00f3 a un escape posiblemente incorrecto del contenido cuando se usaban las ramas. Adem\u00e1s, las acciones de la plantilla dentro de los literales de plantilla de JS no segu\u00edan correctamente la profundidad de las llaves, lo que llev\u00f3 a que se aplicara un escape incorrecto. Estos problemas podr\u00edan causar que las acciones dentro de los literales de plantilla de JS fueran escapadas incorrecta o indebidamente, lo que llev\u00f3 a vulnerabilidades de XSS.\"}],\"affected\":[{\"source\":\"security@golang.org\",\"affectedData\":[{\"vendor\":\"Go standard library\",\"product\":\"html/template\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://pkg.go.dev\",\"packageName\":\"html/template\",\"programRoutines\":[{\"name\":\"context.String\"},{\"name\":\"context.mangle\"},{\"name\":\"escaper.escapeBranch\"},{\"name\":\"Error.Error\"},{\"name\":\"HTMLEscaper\"},{\"name\":\"JSEscape\"},{\"name\":\"JSEscapeString\"},{\"name\":\"JSEscaper\"},{\"name\":\"ParseFS\"},{\"name\":\"ParseFiles\"},{\"name\":\"ParseGlob\"},{\"name\":\"Template.AddParseTree\"},{\"name\":\"Template.Clone\"},{\"name\":\"Template.DefinedTemplates\"},{\"name\":\"Template.Execute\"},{\"name\":\"Template.ExecuteTemplate\"},{\"name\":\"Template.Funcs\"},{\"name\":\"Template.Parse\"},{\"name\":\"Template.ParseFS\"},{\"name\":\"Template.ParseFiles\"},{\"name\":\"Template.ParseGlob\"},{\"name\":\"URLQueryEscaper\"}],\"versions\":[{\"version\":\"0\",\"lessThan\":\"1.25.9\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"1.26.0-0\",\"lessThan\":\"1.26.2\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-04-13T17:48:22.714020Z\",\"id\":\"CVE-2026-32289\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.25.9\",\"matchCriteriaId\":\"C6C9C072-9817-402D-877F-F83584B07017\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.26.0\",\"versionEndExcluding\":\"1.26.2\",\"matchCriteriaId\":\"39FE9BAF-55E9-43AA-B14E-239E7EF1D65D\"}]}]}],\"references\":[{\"url\":\"https://go.dev/cl/763762\",\"source\":\"security@golang.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://go.dev/issue/78331\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU\",\"source\":\"security@golang.org\",\"tags\":[\"Mailing List\",\"Release Notes\"]},{\"url\":\"https://pkg.go.dev/vuln/GO-2026-4865\",\"source\":\"security@golang.org\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-09T13:42:21+00:00",
      "cve": "CVE-2026-32289",
      "id": "CVE-2026-32289",
      "initial_release_date": "2026-04-08T01:06:56.297000+00:00",
      "product_status:fixed": "29",
      "product_status:known_affected": "354",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "html/template: golang: html/template: Cross-Site Scripting (XSS) via improper context and brace depth tracking in JS template literals",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32289.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T18:54:43Z",
      "cve": "CVE-2026-32289",
      "id": "CVE-2026-32289",
      "initial_release_date": "2026-04-08T23:25:45Z",
      "product_status:first_fixed": "6",
      "product_status:known_affected": "72",
      "product_status:known_not_affected": "47",
      "product_status:recommended": "204",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-32289",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-32289.json",
      "version": "12"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 6.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-32289\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-13T17:48:22.714020Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-13T17:48:19.317Z\"}}], \"cna\": {\"title\": \"JsBraceDepth Context Tracking Bugs (XSS) in html/template\", \"affected\": [{\"vendor\": \"Go standard library\", \"product\": \"html/template\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1.25.9\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.26.0-0\", \"lessThan\": \"1.26.2\", \"versionType\": \"semver\"}], \"packageName\": \"html/template\", \"collectionURL\": \"https://pkg.go.dev\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"context.String\"}, {\"name\": \"context.mangle\"}, {\"name\": \"escaper.escapeBranch\"}, {\"name\": \"Error.Error\"}, {\"name\": \"HTMLEscaper\"}, {\"name\": \"JSEscape\"}, {\"name\": \"JSEscapeString\"}, {\"name\": \"JSEscaper\"}, {\"name\": \"ParseFS\"}, {\"name\": \"ParseFiles\"}, {\"name\": \"ParseGlob\"}, {\"name\": \"Template.AddParseTree\"}, {\"name\": \"Template.Clone\"}, {\"name\": \"Template.DefinedTemplates\"}, {\"name\": \"Template.Execute\"}, {\"name\": \"Template.ExecuteTemplate\"}, {\"name\": \"Template.Funcs\"}, {\"name\": \"Template.Parse\"}, {\"name\": \"Template.ParseFS\"}, {\"name\": \"Template.ParseFiles\"}, {\"name\": \"Template.ParseGlob\"}, {\"name\": \"URLQueryEscaper\"}]}], \"references\": [{\"url\": \"https://go.dev/cl/763762\"}, {\"url\": \"https://go.dev/issue/78331\"}, {\"url\": \"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU\"}, {\"url\": \"https://pkg.go.dev/vuln/GO-2026-4865\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"shortName\": \"Go\", \"dateUpdated\": \"2026-04-08T01:06:56.297Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-32289\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-13T18:20:46.377Z\", \"dateReserved\": \"2026-03-11T16:38:46.557Z\", \"assignerOrgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"datePublished\": \"2026-04-08T01:06:56.297Z\", \"assignerShortName\": \"Go\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.