TI-2026-05490 Aliases CVE-2026-6261 GHSA-xjrr-vq8h-v4xh

Betheme <= 28.4 - Authenticated (Author+) Arbitrary File Upload to Remote Code Execution via Icon Pack Upload

MEDIUM 41CWE-434Published 2026-05-05 · Updated 2026-05-05

Key facts

Attack vector: Network
Privileges required: Low
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 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

The Betheme theme for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 28.4. This is due to the upload_icons() function workflow moving and unzipping user-controlled ZIP files into a public uploads directory without validating extracted file types. This makes it possible for authenticated attackers, with author-level access and above, to upload arbitrary files (including PHP) and achieve remote code execution via the Icons icon-pack upload flow.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00612 49th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
MuffinGroup	Betheme	up to 28.4	—	No fix listed	CNA

Betheme VendorMuffinGroup Affected up to 28.4 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

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

CPE	Versions	Role	Vendor
cpe:2.3:a:muffingroup:betheme::::::::	—	—	MuffinGroup

cpe:2.3:a:muffingroup:betheme:*:*:*:*:*:*:*:* Versions — — ·MuffinGroup

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-6261
2026-10-03 Alias added: GHSA-xjrr-vq8h-v4xh
2026-10-25 EPSS moved to the below the 50th percentile

References

Other 2

TI-2026-46718 WordPress Betheme theme <= 28.4.2 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 9.9
TI-2022-03539 Betheme <= 26.5.1.4 - Authenticated (Subscriber+) PHP Object Injection CVSS 3.1HIGH 8.8
TI-2022-03442 Becustom <= 1.0.5.2 - Cross-Site Request Forgery CVSS 3.1HIGH 8.8
TI-2024-02509 Betheme <= 27.5.6 - Authenticated (Contributor+) PHP Object Injection CVSS 3.1HIGH 8.8
TI-2022-22322 WordPress Betheme premium theme <= 26.6.1 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
TI-2022-22167 WordPress Betheme theme <= 26.5.1.4 - Auth. PHP Object Injection vulnerability CVSS 3.1HIGH 8.8

See all 25 →

Sources

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