CVE-2021-29476
Insecure Deserialization of untrusted data in rmccue/requests
CRITICAL
9.8
CVSS Score
Published: April 27, 2021 at 08:55 PM UTC
Updated: June 17, 2026 at 03:47 AM UTC
1 product affected across 1 vendorRequests
Using Requests by WordPress?
Get instant alerts when new vulnerabilities affect Requests - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Requests· WordPresswordpress-plugin
95%Affected range stops below 1.8.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/rmccue/Requests/pull/421CVSS
9.8CRITICALGitHub_M
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-502
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card