Read the docs
TI-2026-70998 Aliases CVE-2026-103522GHSA-fr55-rfpm-h943

Unrestricted file upload in Thelia banner feature allows PHP execution

Priority LOW 34CWE-434Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.

Summary

Thelia v2.6.0 is affected. The store banner upload feature validates file types using only client-supplied MIME types, an unrestricted upload of a file with a dangerous type (CWE-434). An attacker with administrative access can upload a PHP file disguised as an image to bypass validation and execute code on the underlying server.

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

Description from the CNA

In Thelia v2.6.0, the store banner upload feature performs insufficient filetype validation that relies exclusively on client‑supplied MIME types. An attacker with administrative access can upload a PHP file disguised as an image to bypass validation and achieve remote code execution on the underlying server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00584 48th 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
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TheliaTheliaup to 2.6.0—No fix listedCNA
  • Thelia VendorThelia Affected up to 2.6.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Thelia.

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

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-103522
  2. 2026-10-12 Alias added: GHSA-fr55-rfpm-h943

References

Other 1

  • TI-2026-83555 Stored cross-site scripting in Thelia via coupon customer names CVSS 4.0HIGH 7.4
  • TI-2026-83574 Cross-site request forgery in Thelia back-office product combination routes CVSS 4.0MEDIUM 6.9
  • TI-2026-83557 CSRF in Thelia Page Module delete routes lets attackers remove images CVSS 4.0HIGH 7.0
  • TI-2026-83556 Thelia back office CSRF via leaked URL tokens and unprotected actions CVSS 4.0MEDIUM 5.9
  • TI-2026-71031 CSV formula injection in Thelia exports lets visitors run spreadsheet formulas CVSS 4.0LOW 2.3
  • TI-2026-71005 Thelia translation editor flaws allow remote code execution CVSS 3.1HIGH 8.8
See all 18 →

Sources

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