Deserialization in WordPress Requests
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- WordPress Requests — versions 1.6.1, >= 1.6.0, < 1.8.0, 1.6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/WordPress/Requests/security/advisories/GHSA-52qp-jpq7-6c54 (Third Party Advisory)
- github.com/rmccue/Requests/pull/421 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29476?
- CVE-2021-29476 is a critical-severity vulnerability in WordPress Requests, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-04-27.
- How severe is CVE-2021-29476?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-29476 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.