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Vulnerability Details :

CVE-2026-8888

Summary
Assigner-certcc
Assigner Org ID-37e5125f-f79b-445b-8fad-9564f167944b
Published At-03 Jun, 2026 | 18:16
Updated At-04 Jun, 2026 | 19:48
Rejected At-
Credits

CVE-2026-8888

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:certcc
Assigner Org ID:37e5125f-f79b-445b-8fad-9564f167944b
Published At:03 Jun, 2026 | 18:16
Updated At:04 Jun, 2026 | 19:48
Rejected At:
▼CVE Numbering Authority (CNA)
CVE-2026-8888

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.

Affected Products
Vendor
Securly
Product
Securly Chrome Extension
Versions
Affected
  • From 0 through 3.0.7 (custom)
Problem Types
TypeCWE IDDescription
N/AN/ACWE-1333
Type: N/A
CWE ID: N/A
Description: CWE-1333
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://kb.cert.org/vuls/id/595768
N/A
Hyperlink: https://kb.cert.org/vuls/id/595768
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-1333CWE-1333 Inefficient Regular Expression Complexity
Type: CWE
CWE ID: CWE-1333
Description: CWE-1333 Inefficient Regular Expression Complexity
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cret@cert.org
Published At:03 Jun, 2026 | 19:16
Updated At:04 Jun, 2026 | 20:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-1333Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-1333
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://kb.cert.org/vuls/id/595768cret@cert.org
N/A
Hyperlink: https://kb.cert.org/vuls/id/595768
Source: cret@cert.org
Resource: N/A

Change History

0
Information is not available yet

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