TI-2021-07139 Aliases CVE-2021-24857 GHSA-q5c4-rqq9-f524

ToTop Link <= 1.7.1 - Unauthenticated PHP Object Injection

MEDIUM 46CWE-502Published 2021-12-13 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
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 · NVD. Fix status from CNA. Impact type from CWE-502.

Summary

The ToTop Link WordPress plugin through 1.7.1 passes base64 encoded user input to the unserialize() PHP function, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain.

Why it matters now

EPSS 0.01902 79th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	ToTop Link	1.7.1 – 1.7.1	—	No fix listed	CNA

ToTop Link VendorUnknown Affected 1.7.1 – 1.7.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nocean:totop_link::::::wordpress::*	up to 1.7.1	Vulnerable	Nocean

cpe:2.3:a:nocean:totop_link:*:*:*:*:*:wordpress:*:* Versions up to 1.7.1 Vulnerable ·Nocean

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-24857
2026-10-03 Alias added: GHSA-q5c4-rqq9-f524

References

Exploit 1

https://wpscan.com/vulnerability/518204d8-fbf5-4bfa-9db5-835f908f8d8e

Sources

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