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TI-2026-65007 Aliases CVE-2026-100869GHSA-3jc5-2834-w7f2

Sylius 2.x before 2.1.16 and 2.2.9 Arbitrary Payment Action via Shop API

Priority LOW 35CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Sylius versions before 2.1.16 and 2.2.9 fail to restrict payment request actions in the Shop API endpoint, allowing customers to trigger refunds on completed orders. Attackers with order tokens can submit arbitrary payment actions like refunds that payment gateways execute while Sylius maintains order as paid, causing financial loss.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00263 18th percentileScored 2026-11-07
Fix Fixed Sylius (Sylius): 2.1.16, 2.2.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
SyliusSylius2.0.0 to before 2.1.16; 2.2.0 to before 2.2.92.1.16, 2.2.9Patch availableCNA
  • Sylius VendorSylius Affected 2.0.0 to before 2.1.16; 2.2.0 to before 2.2.9 Fixed in 2.1.16, 2.2.9 Patch available CNA

CPE names Threatist (inferred) · 1

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

CPEVersionsRoleVendor
cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:*——Sylius
  • cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:* Versions — — ·Sylius

Remediation

  • Fix · CNA Sylius (Sylius) Fixed in 2.1.16, 2.2.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Sylius 2.1.16, 2.2.9

    2 records Highest priority Priority HIGH 1 HIGH, 1 LOW

    Other records, highest priority first

    • TI-2026-65010 Sylius 2.x before 2.1.16 and 2.2.9 Payment Amount OverwritePriority HIGH 77
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100869
  2. 2026-10-03 Alias added: GHSA-3jc5-2834-w7f2

References

Patch 2

Advisory 1

Other 2

  • TI-2026-65010 Sylius 2.x before 2.1.16 and 2.2.9 Payment Amount Overwrite CVSS 4.0HIGH 8.7
  • TI-2026-24374 Sylius is Missing Authorization in API v2 Add Item Endpoint CVSS 4.0MEDIUM 6.9
  • TI-2022-08557 Insufficient Session Expiration in Sylius CVSS 3.1HIGH 8.2
  • TI-2026-48275 Sylius Mollie Plugin: Unauthenticated IDOR leaks order token and customer PII CVSS 3.1MEDIUM 6.5
  • TI-2026-24378 Sylius has a DQL Injection via API Order Filters CVSS 3.1MEDIUM 5.3
  • TI-2024-19437 Sylius 1.12.13 is vulnerable to Cross Site Scripting (XSS) via the "Province" field in Address Book. CVSS 3.1MEDIUM 6.4
See all 37 →

Sources

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