CVE-2021-29476
CRITICALCVSS 9.8/10EPSS 2.14%
Last modified
CVE-2021-29476 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Requests is a HTTP library written in PHP. Requests mishandles deserialization in FilteredIterator. EPSS estimates a 2.14% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wordpress | Requests | 1.6.0 |
| Wordpress | Requests | 1.6.1 |
| Wordpress | Requests | 1.7.0 |
References
- https://github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54Third Party Advisory
- https://github.com/rmccue/Requests/pull/421Patch, Third Party Advisory
- https://github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54Third Party Advisory
- https://github.com/rmccue/Requests/pull/421Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-29476?
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.
How severe is CVE-2021-29476?
CVE-2021-29476 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.14% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29476?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-29476?
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Scan your code nowSource: NVD / NIST