Administrator email content injection via shared transient
Published Sep 2, 2026 · Updated Sep 2, 2026
Email content injection in MultiVendorX CatalogX before 6.1.3 allows remote attackers to place arbitrary text in administrator notifications. An unauthenticated request stores unsanitized content in a shared transient, and the enquiry email builder later inserts that value without escaping when another visitor submits a product enquiry. The attack requires no account but does require an unrelated visitor to trigger delivery, leaving the site administrator with attacker-controlled email content.
Summary
What happened
Email content injection in MultiVendorX CatalogX before 6.1.3 allows remote attackers to place arbitrary text in administrator notifications. An unauthenticated request stores unsanitized content in a shared transient, and the enquiry email builder later inserts that value without escaping when another visitor submits a product enquiry. The attack requires no account but does require an unrelated visitor to trigger delivery, leaving the site administrator with attacker-controlled email content.
The record
- CVE
- CVE-2026-79621
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- MultiVendorX
- Product
- CatalogX
- Classifications
- CWE-345
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <6.1.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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