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CVE-2026-115425

Multiple cross-site scripting (XSS) in OPNsense

CVSS score

5.6

EPSS probability

—

Risk score

0.6

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Multiple Cross-Site Scripting (XSS) Vulnerabilities in OPNsense

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

Multiple cross-site scripting (XSS) vulnerabilities affect OPNsense firewall versions, allowing a low-privileged attacker to execute JavaScript within the context of another user.

Why does it matter?

Low-privileged attackers can target other users via specially crafted links or specific pages, leading to potential compromise of user session contexts and security boundaries.

What should be done?

  • Upgrade to version 26.7.7 or later where unaffected
  • Follow vendor advisories and security updates
Chain of evidence and sources3 verified claims

OPNsense güvenlik duvarı 26.7.1_1 ve önceki sürümleri birden fazla XSS zafiyetinden etkilenmektedir.

S0 · daybreach-canonicalS1 · cvelist

Zafiyet, düşük yetkili bir saldırganın başka bir kullanıcının bağlamında JavaScript çalıştırmasına izin vermektedir.

S0 · daybreach-canonicalS1 · cvelist

26.7.7 sürümü bu zafiyetten etkilenmemektedir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

Multiple cross site scripting (XSS) vulnerabilities affect OPNsense firewall vesrion 26.7.1_1 and earlier allows low privileged attacker to execute Javascript in the context of another user visiting a specific page or clicking on a specifically crafted link.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P/S:P/AU:Y/R:I/V:C/RE:M/U:Amber

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-115425 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1opnsenseOPNsense firewall View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.6CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P/S:P/AU:Y/R:I/V:C/RE:M/U:AmberCVE CNA
5.6CVSS V40MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:I/V:C/RE:M/U:AmberNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-115425 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-115425 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
User—

Official Sources and Advisories

https://digitalcanion.com/security-research/#ghsa-9h93-hhcx-957cvendor-advisoryhttps://github.com/opnsense/core/security/advisories/GHSA-9h93-hhcx-957cvendor-advisory

CVSS Vector Radar Chart

5.6 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P/S:P/AU:Y/R:I/V:C/RE:M/U:Amber
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionP
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)P
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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CVE-2026-115425 · Multiple cross-site scripting (XSS) in…