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Adobe Commerce CVE-2026-48414

| EUVDEUVD-2026-56850 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-08-11 psirt@adobe.com GHSA-494v-287r-fm5v
8.7
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as low-privileged user
  2. Delivery
    Submit payload into vulnerable form field
  3. Exploit
    Payload stored server-side
  4. Execution
    Victim (admin) browses affected page
  5. Persist
    Script executes in victim session
  6. Impact
    Hijack account/session across scope

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires an authenticated low-privileged account on the Adobe Commerce / Magento Open Source / Commerce B2B storefront or back office (PR:L) able to submit data into a vulnerable form field, plus victim interaction (UI:R) - a higher-privileged user such as an administrator must later browse the page that renders the stored payload. Exploitation is further limited by Adobe's stated dependence on 'conditions beyond the attacker's control,' and is bounded to affected releases: Adobe Commerce 2.4.4 through 2.4.9 (pre Aug-2026 patch), Magento Open Source 2.4.6-2.4.9 (pre Aug-2026 patch), and Commerce B2B 1.3.3-1.5.3 (pre Aug-2026 patch). It is not remote-unauthenticated and not automatable per SSVC.

Impact

Signals are consistent and point to a real-but-not-urgent priority. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N, base 8.7) reflects a network-reachable, low-complexity stored XSS that requires low-privileged authentication (PR:L) and victim interaction (UI:R), with a scope change (S:C) because injected script executes in another user's/admin's authenticated context. Corroborating signals temper the raw score: EPSS is low at 0.53% (42nd percentile), and CISA's SSVC decision framework lists Exploitation=none and Automatable=no, so no widespread or automated exploitation is expected - though it rates Technical Impact=total, aligning with the C:H/I:H account/session-takeover claim. There is no CISA KEV listing and no public exploit identified. The description's caveat 'Exploit depends on conditions beyond the attacker's control' suggests real-world exploitability is more constrained than AC:L alone implies (a case for AC:H); this is a mild internal tension between the NVD vector and Adobe's wording. Net: a legitimately dangerous stored XSS in a widely deployed e-commerce platform, but one gated by authentication, user interaction, and situational conditions - treat as important patch-management priority rather than an emergency.

Exploit ScenarioDerived

A low-privileged authenticated user (e.g., a limited back-office/vendor or B2B company account) injects malicious JavaScript into a vulnerable form field that is later rendered to another user. When a higher-privileged victim such as a store administrator browses the page containing the stored payload, the script runs in their authenticated session, enabling account/session takeover across a security scope boundary. No public proof-of-concept exploit has been identified at time of analysis, and success depends on conditions beyond the attacker's control per Adobe's advisory.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv2 – Sep 25, 2026

Stored cross-site scripting in Adobe Commerce 2.4.4 through 2.4.9, Magento Open Source 2.4.6-2.4.9, and Commerce B2B 1.3.3-1.5.3 lets an authenticated low-privileged attacker inject malicious JavaScript into a vulnerable form field, which then executes in the browser of a higher-privileged user (such as an administrator) who later views the page, potentially yielding control of that account or session. Exploitation is not automatable and requires victim interaction, and Adobe describes it as depending on conditions beyond the attacker's control, so the independently assessed vector raises attack complexity to AC:H; there is no public exploit identified at time of analysis, no CISA KEV listing, and EPSS is only 0.53% (42nd percentile), though technical impact is rated total by SSVC because a successful XSS in a privileged session is effectively a full compromise of that user's authority.

Earlier versions of this analysis (1)
v1 Aug 11, 2026 - 19:41 CVSS 7.7

Stored Cross-Site Scripting in Adobe Commerce and Magento Open Source allows a low-privileged authenticated attacker to persistently inject malicious JavaScript into vulnerable form fields, which then executes in the browser of any privileged user who views the affected page. The changed scope (S:C) is the defining risk amplifier: a successful exploitation targets an administrator or session-holding user whose browser context becomes fully compromised, enabling session hijacking or unauthorized actions without ever requiring admin credentials. No public exploit code has been identified and this CVE is not listed in CISA KEV at the time of analysis.

RemediationAI

Apply the Adobe August 2026 security patch for the affected branch: Adobe Commerce and Magento Open Source 2.4.9-2026-aug, 2.4.8-2026-aug, 2.4.7-2026-aug, and 2.4.6-2026-aug (plus 2.4.5-2026-aug and 2.4.4-2026-aug for Commerce), and Commerce B2B 1.5.3-2026-aug, 1.5.2-2026-aug, 1.4.2-2026-aug, 1.3.4-2026-aug, and 1.3.3-2026-aug, as detailed in Adobe advisory APSB26-92 (https://helpx.adobe.com/security/products/magento/apsb26-92.html). Where immediate upgrade is not possible, reduce the window of exposure by restricting which roles can submit content into storefront and admin form fields (trade-off: may disrupt merchant content workflows), enforcing a strict Content Security Policy that blocks inline and third-party script execution (trade-off: can break legitimate storefront scripts and third-party integrations and requires testing), sanitizing and output-encoding stored field values at render time, and limiting administrative session exposure via short session lifetimes and re-authentication before privileged actions (side effect: more frequent admin logins). Additional compensating controls include monitoring for stored script payloads in CMS blocks, product attributes, and customer-facing forms, and applying virtual patching at the WAF layer, though WAF rules are bypassable and should be treated as temporary.

Affected VersionsENISA

Adobe Commerce B2B 0 ≤1.5.3-2026-jul, 1.5.2-2026-jul, 1.4.2-2026-jul, 1.3.4-2026-jul, 1.3.3-2026-jul
Magento Open Source patch: 2.4.9-2026-aug, 2.4.8-2026-aug, 2.4.7-2026-aug, 2.4.6-2026-aug
Magento Open Source 0 ≤2.4.9-2026-jul, 2.4.8-2026-jul, 2.4.7-2026-jul, 2.4.6-2026-jul
Adobe Commerce 0 ≤2.4.9-2026-jul, 2.4.8-2026-aug, 2.4.7-2026-aug, 2.4.6-2026-aug, 2.4.5-2026-aug, 2.4.4-2026-aug
Adobe Commerce patch: 2.4.9-2026-aug, 2.4.8-2026-aug, 2.4.7-2026-aug, 2.4.6-2026-aug, 2.4.5-2026-aug, 2.4.4-2026-aug
Adobe Commerce B2B patch: 1.5.3-2026-aug, 1.5.2-2026-aug, 1.4.2-2026-aug, 1.3.4-2026-aug, 1.3.3-2026-aug

Affected Packages

euvd adobe_commerce_0_2_4_9_2026_jul_2_4_8_2026_aug_2_4_7_2026_aug_2_4_6_2026_aug_2_4_5_2026_aug no fix
euvd adobe_commerce_b2b_0_1_5_3_2026_jul_1_5_2_2026_jul_1_4_2_2026_jul_1_3_4_2026_jul no fix
euvd magento_open_source_0_2_4_9_2026_jul_2_4_8_2026_jul_2_4_7_2026_jul no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 3 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This is a classic CWE-79 improper neutralization of input during web page generation, specifically the stored (persistent) variant: user-supplied content accepted by an Adobe Commerce form field is persisted by the application and later re-rendered without adequate output encoding, so the injected script runs in the origin of the Commerce storefront or admin panel. The CVSS vector records Scope Changed (S:C), meaning the vulnerable component's security authority is exceeded - the script executes in the victim's browser session against the administrative or storefront UI rather than being confined to the attacker's own low-privileged context - and Confidentiality and Integrity are both High while Availability is None. The assessed vector (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N) confirms the attack surface is network-reachable but requires a valid low-privileged account (PR:L) plus a privileged victim to open the poisoned page (UI:R); the original NVD vector claimed AC:L, but the independent assessment reflects Adobe's statement that success hinges on conditions outside the attacker's control. Affected CPE entries cover the Adobe Commerce 2.4.4 branch through patch levels p1 to p18, with EUVD scope extending to Adobe Commerce 2.4.4-2.4.9, Magento Open Source 2.4.6-2.4.9, and Adobe Commerce B2B 1.3.3-1.5.3 (EUVD-2026-56850).

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Severity by source

NVD PRIMARY 8.7 HIGH
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
vuln.today AI 7.7 HIGH

Network-reachable stored XSS needing a low-privileged account (PR:L) and admin interaction (UI:R); AC:H reflects Adobe's 'conditions beyond attacker's control,' and cross-context session takeover gives S:C with C:H/I:H, A:N.

3.1 AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
4.0 AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Updated
Sep 25, 2026 - 16:45 vuln.today
v2 - CVSS changed
CVSS changed
Sep 25, 2026 - 16:37 NVD
7.7 (HIGH) 8.7 (HIGH)
CVE Published
Aug 11, 2026 - 18:17 nvd
HIGH 7.7

DescriptionNVD

Adobe Commerce is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Exploit depends on conditions beyond the attacker's control. Scope is changed.

Executive ViewAI

Why It Matters

Adobe Commerce versions 2.4.4 through 2.4.9, Magento Open Source 2.4.6-2.4.9, and Commerce B2B 1.3.3-1.5.3 are affected by a stored cross-site scripting vulnerability that could allow a low-privileged attacker to inject malicious scripts into form fields, which then execute in the browser of a higher-privileged user such as an administrator, potentially leading to full administrative account compromise. This poses a significant risk to organizations relying on these platforms for e-commerce operations, as an attacker could gain control over administrative functions, leading to data theft, financial fraud, or further network penetration. No vendor-released patch identified at time of analysis, so leadership should prioritize implementing compensating controls and planning for upgrades to protect critical business assets and customer trust.

Business Impact: Severe
Compensating Controls

Implement strict input validation and output encoding on all form fields, deploy Content Security Policy (CSP) headers to prevent script execution, restrict administrative access to trusted networks and enforce least privilege, enable comprehensive logging and monitoring for suspicious admin activity, and consider a web application firewall (WAF) with XSS protection rules.

Threat Intelligence Overview

EPSS Score
0.5%
Top 58% exploitable
Prevalence
High
Adobe Commerce/Magento is a widely deployed enterprise e-commerce platform
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Very High
Technical Impact
Total

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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