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TI-2026-83501 Aliases CVE-2026-119166GHSA-4367-rh2q-m2rx

Welcart e-Commerce Account Takeover via Unauthenticated member[ID] IDOR

Priority LOW 30CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

The Welcart e-Commerce plugin for WordPress is vulnerable to Insecure Direct Object Reference through the 'member[ID]' parameter in all versions up to and including 2.12.5, because the plugin does not validate a user-controlled key. An unauthenticated attacker who supplies an existing shop member's numeric ID can overwrite that account's email address and password, then log in as that member. The only barrier is a wp_verify_nonce() check, and the nonce is printed to every visitor on the auto-published New Enrollment Form, so no existing account, WordPress login or non-default configuration is needed. The CVSS 3.1 base score is 5.3 (MEDIUM), and CWE-287 Improper Authentication applies.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

The Welcart e-Commerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.12.5 via the 'member[ID]' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to overwrite any existing Welcart shop-member account's email address and password by supplying that member's numeric ID, then authenticate as that member to achieve full account takeover. The only authentication barrier is a wp_verify_nonce() check against a nonce printed to every unauthenticated visitor on the auto-published New Enrollment Form, meaning no existing account, no WordPress login, and no non-default configuration is required to exploit this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00289 21st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
uscnanbuWelcart e-Commerceup to 2.12.5—No fix listedCNA
  • Welcart e-Commerce Vendoruscnanbu Affected up to 2.12.5 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:welcart:welcart_e-commerce:*:*:*:*:*:*:*:*——uscnanbu
  • cpe:2.3:a:welcart:welcart_e-commerce:*:*:*:*:*:*:*:* Versions — — ·uscnanbu

Remediation

No fixed version is listed for Welcart e-Commerce. Affected sites should update to a fixed release when the vendor publishes one, and should check accounts for unexpected email or password changes in the meantime.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-119166
  2. 2026-10-31 Alias added: GHSA-4367-rh2q-m2rx
  3. 2026-11-03 CISA SSVC decision points changed

References

Other 7

  • TI-2023-05484 Welcart e-Commerce < 2.9.5 - Subscriber+ Arbitrary File Upload CVSS 3.1HIGH 8.8
  • TI-2022-03880 Welcart e-Commerce < 2.8.6 - Subscriber+ PHAR Deserialisation CVSS 3.1HIGH 8.8
  • TI-2022-03786 Welcart e-Commerce < 2.8.5 - Unauthenticated Arbitrary File Access CVSS 3.1HIGH 7.5
  • TI-2026-84126 Cross-site scripting in Welcart e-Commerce Plugin payment error page CVSS 4.0MEDIUM 5.3
  • TI-2022-03879 Welcart e-Commerce < 2.8.5 - Subscriber+ Arbitrary File Access CVSS 3.1MEDIUM 6.5
  • TI-2022-03618 Welcart e-Commerce < 2.8.4 - Subscriber+ Arbitrary Shipping Method Creation/Update/Deletion CVSS 3.1MEDIUM 6.5
See all 52 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences