CVE-2026-8888 (GCVE-0-2026-8888)

Vulnerability from cvelistv5 – Published: 2026-06-03 18:16 – Updated: 2026-06-03 18:18
VLAI
Title
CVE-2026-8888
Summary
Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
Securly Securly Chrome Extension Affected: 0 , ≤ 3.0.7 (custom)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Securly Chrome Extension",
          "vendor": "Securly",
          "versions": [
            {
              "lessThanOrEqual": "3.0.7",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-1333",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T18:18:13.249Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/595768"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-8888",
      "x_generator": {
        "engine": "VINCE 3.0.42",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-8888"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-8888",
    "datePublished": "2026-06-03T18:16:25.264Z",
    "dateReserved": "2026-05-18T20:40:05.298Z",
    "dateUpdated": "2026-06-03T18:18:13.249Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-8888\",\"sourceIdentifier\":\"cret@cert.org\",\"published\":\"2026-06-03T19:16:39.807\",\"lastModified\":\"2026-06-03T19:16:39.807\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://kb.cert.org/vuls/id/595768\",\"source\":\"cret@cert.org\"}]}}"
  }
}


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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.
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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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