Security readout for executives and security teams
Plain-English summary
This low-severity Adobe Commerce flaw can send a shopper from a trusted store link to an attacker-controlled website. It could support convincing phishing or credential-theft lures, but requires the user to click or otherwise interact. The supplied evidence indicates no confidentiality or availability impact from the redirect itself.
Executive priority
Schedule remediation through normal vulnerability management, prioritizing public storefronts and brands frequently targeted by phishing. Emergency response is not supported by the supplied severity or exploitation evidence, but delaying correction preserves an avoidable trust-abuse opportunity.
Technical view
CVE-2026-21295 is a CWE-601 open redirect reachable over the network without authentication. Exploitation has high complexity and requires user interaction. CVSS 3.1 scores it 3.1, with limited integrity impact. The bundle does not identify the vulnerable route, redirect parameter, or underlying validation failure.
Likely exposure
Exposure is most likely on affected, publicly accessible Adobe Commerce deployments. The description covers 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16, and earlier. The structured data also references Commerce B2B and Magento Open Source; confirm exact applicability with Adobe's advisory.
Exploitation context
The supplied bundle marks this CVE as absent from KEV and provides no evidence of active exploitation. An attacker would need to induce user interaction with a crafted link. Practical risk is primarily abuse of the organization's trusted storefront domain in phishing or redirection campaigns.
Researcher notes
CVSS is 3.1: AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N. Testing should remain non-destructive and focus on whether redirect destinations are constrained to trusted locations. Exact routes and parameters are not provided. The structured version ranges are difficult to interpret, so Adobe's advisory should control applicability decisions.
Mitigation direction
- Inventory Adobe Commerce, Commerce B2B, and Magento Open Source versions.
- Review Adobe APSB26-05 for exact affected versions and corrected releases.
- Upgrade each affected deployment according to Adobe's branch-specific guidance.
- Reduce distribution of untrusted storefront links until remediation is complete.
Validation and detection
- Confirm deployed product, edition, and full patch-level version.
- Compare each deployment against Adobe APSB26-05 applicability information.
- After updating, verify untrusted external redirect destinations are rejected.
- Review web and security telemetry for suspicious redirect-link activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-21295 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N1.61.4adobeVulnerability scoring details
Base CVSS 3.1 score
3.1LowVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/magento/apsb26-05.htmlCVE reference, adobe · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.