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Operator precedence error in mall4j deletes other users' cart items

Priority MEDIUM 57CWE-783Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

mall4j through 4.0 by gz-yami contains an improper authorization flaw caused by an operator precedence error in a SQL statement (CWE-783). An authenticated storefront customer can delete the cart entries of all other shoppers for off-shelf products, and the deleted entries do not return when products are restocked. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

mall4j through 4.0 contains an improper authorization vulnerability that allows authenticated storefront customers to delete other shoppers' cart items through an operator precedence error in the cleanExpiryProdList SQL statement. Attackers can send one DELETE request to /p/shopCart/cleanExpiryProdList to remove every user's cart entries for off-shelf products, which do not return when products are restocked.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00238 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gz-yamimall4jup to 4.0—No fix listedCNA
  • mall4j Vendorgz-yami Affected up to 4.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for mall4j.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-11 Threatist record created from CVE-2026-108691
  2. 2026-10-11 Alias added: GHSA-8r5r-2mmr-2vjr
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: LOW → MEDIUM

References

  • TI-2026-65359 mall4j through 4.0 Missing Authentication in Password Update Endpoint CVSS 4.0CRITICAL 9.3
  • TI-2026-65360 mall4j through 4.0 Missing Authentication in Product Review Deletion CVSS 4.0MEDIUM 6.9
  • TI-2026-75401 Authorization bypass in Mall4cloud exposes buyer shipping addresses CVSS 4.0HIGH 7.1
  • TI-2026-65363 mall4j through 4.0 Missing Authorization in Admin User Address Endpoints CVSS 4.0HIGH 7.1
  • TI-2026-65361 mall4j through 4.0 Unauthenticated Shipment Tracking Disclosure via Order Number CVSS 4.0MEDIUM 6.3
  • TI-2026-70670 Information disclosure in mall4j exposes other shoppers' cart items CVSS 4.0MEDIUM 5.3
See all 9 →

Sources