What’s Vulnerable › Vulnerabilities

CVE-2021-29476: Insecure Deserialization of untrusted data in rmccue/requests

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-27 · updated 2026-06-17
• Weakness: CWE-502

Description

Requests is a HTTP library written in PHP. Requests mishandles deserialization in FilteredIterator. The issue has been patched and users of `Requests` 1.6.0, 1.6.1 and 1.7.0 should update to version 1.8.0.

Affected products

• WordPress Requests: 1.6.0, 1.6.1, 1.7.0

References

• https://github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54
• https://github.com/rmccue/Requests/pull/421
• https://github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54
• https://github.com/rmccue/Requests/pull/421

Get alerted when CVE-2021-29476 or the next vulnerability affects your stack