CVE-2026-8889
📛 CVE Title
CVE-2026-8889
Description
Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
Overview
- State
- PUBLISHED
- Assigner (CNA)
- certcc
- CVSS severity
- high
- CVSS score
- 7.5 / 10
- CVSS vector
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-328 - Reserved
- 2026-05-18
- Published
- 2026-06-03 18:15 UTC
- Last updated
- 2026-06-03 18:15 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8889.json
- Linked Threat
- CVE-2026-8889 — CVE-2026-8889
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-06-03 19:16:39 UTC
- NVD last modified
- 2026-06-17 11:04:35 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: nvd@nist.gov
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0025 (probability of exploitation in next 30 days)
- EPSS percentile
- 16.06% vs all CVEs — higher = more likely to be exploited, as of 2026-06-29
NVD-assigned CWE(s):
CWE-407
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-06-30 01:35 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-34167 - Assigner
- certcc
- Published
- Jun 3, 2026, 6:15:15 PM
- Updated
- Jun 10, 2026, 7:00:10 PM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EUVD-reported EPSS
- 0.2500
- Vendors
- Securly
- Products
-
Securly Chrome Extension (0 ≤3.0.7)
- Aliases
-
GHSA-7qqf-r2pg-xhqj
ENISA description: Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Securly | Securly Chrome Extension |
0 (affected)
|
— |
Affected products — CPE 2.3 (1) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:securly:securly:3.0.7:*:*:*:*:chrome:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (4)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://kb.cert.org/vuls/id/595768 tenable:kb.cert.org
- https://nvd.nist.gov/vuln/detail/CVE-2026-8889 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-8889 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://kb.cert.org/vuls/id/595768 cret@cert.org Third Party AdvisoryVDB Entry
Remediations (20)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-06-08 15:48 UTC -
web:github.com
Microsoft Security Advisory CVE - 2026 -42899 - ASP.NET Core Denial of Service Vulnerability #397
2026-06-08 15:48 UTC -
web:nvd.nist.gov
Description Use after free in FileSystem in Google Chrome prior to 149..7827.53 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
2026-06-08 15:48 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-08 15:48 UTC -
web:support.microsoft.com
This update for Windows 11, version 25H2 and 24H2 (KB5084597) incudes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates. To view the ...
2026-06-08 15:48 UTC -
web:www.helpnetsecurity.com
The fix will be rolled into the June Patch Tuesday release. The June Patch Tuesday release will contain a fix for the failures and errors when installing KB5089549 for Windows 11.
2026-06-08 15:48 UTC -
web:www.notebookcheck.net
CVE - 2026 -41089, a critical Windows Netlogon flaw rated CVSS 9.8, is now actively exploited. Unpatched domain controllers face full SYSTEM-level compromise with no credentials needed.
2026-06-08 15:48 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-06-08 15:48 UTC -
web:www.rapid7.com
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday, including critical RCE in Netlogon and the Windows DNS client.
2026-06-08 15:48 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-08 15:48 UTC -
web:cybersecuritynews.com
Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.
2026-06-19 02:33 UTC -
web:hackerdesk.com
Critical Security Vulnerabilities Alert: Latest CVE Updates and Patch Management Strategies for April 2026 This report details critical security vulnerabilities disclosed in April 2026 , including severe flaws in Fortinet, FileZen, and Microsoft products. Organizations are urged to prioritize patching based on risk assessment and leverage compensating controls to mitigate immediate threats ...
2026-06-19 02:33 UTC -
web:securityarsenal.com
A critical CVSS 9.8 flaw in Windows Netlogon allows SYSTEM-level code execution on Domain Controllers. Immediate patching is required.
2026-06-19 02:33 UTC -
web:support.microsoft.com
This Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5089466) includes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates. To ...
2026-06-19 02:33 UTC -
web:techcommunity.microsoft.com
UPDATE June 9, 2026 : Please see our release blog post for June 2026 Security Update for more information on this CVE : Released: June 2026 Exchange Server Security Updates | Microsoft Community Hub. On May 14, 2026 , Microsoft disclosed CVE - 2026 -42897, a reported vulnerability affecting Exchange Outlook Web Access (OWA). An attacker could exploit this issue by sending a specially crafted email ...
2026-06-19 02:33 UTC -
web:threatprotect.qualys.com
Zero-day Vulnerabilities Patched in April Patch Tuesday Edition CVE - 2026 -33825: Microsoft Defender Elevation of Privilege Vulnerability Microsoft Defender is a comprehensive, AI-powered security suite that provides malware protection, phishing detection, and web protection for individuals and businesses.
2026-06-19 02:33 UTC -
web:www.bleepingcomputer.com
Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.
2026-06-19 02:33 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-06-19 02:33 UTC -
web:www.linkedin.com
Microsoft has confirmed that it is developing a security update to address a newly disclosed zero-day vulnerability in Microsoft Defender, following the public release of exploit code that ...
2026-06-19 02:33 UTC -
web:www.malwarebytes.com
Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.
2026-06-19 02:33 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-8889.json.
{
"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 uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes)."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-328",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-03T18:15:15.450Z",
"orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"shortName": "certcc"
},
"references": [
{
"url": "https://kb.cert.org/vuls/id/595768"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "CVE-2026-8889",
"x_generator": {
"engine": "VINCE 3.0.42",
"env": "prod",
"origin": "https://cveawg.mitre.org/api/cve/CVE-2026-8889"
}
}
},
"cveMetadata": {
"assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"assignerShortName": "certcc",
"cveId": "CVE-2026-8889",
"datePublished": "2026-06-03T18:15:15.450Z",
"dateReserved": "2026-05-18T20:43:53.154Z",
"dateUpdated": "2026-06-03T18:15:15.450Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}