What is CVE-2021-3007?

CVE-2021-3007 is a critical-severity vulnerability in Getlaminas Laminas-Http, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-01-04.

How severe is CVE-2021-3007?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-3007 known to be exploited?

22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Getlaminas Laminas-Http

CVE-2021-3007

Laminas Project laminas-http before 2.14.2, and Zend Framework 3.0.0, has a deserialization vulnerability that can lead to remote code execution if the content is controllable, related to the __destruct method of the Zend\Http\Response\Stream class in Stream.php. NOTE: Zend Framework is no longer supported by the maintainer. NOTE: the laminas-http vendor considers this a "vulnerability in the PHP language itself" but has added certain type checking as a way to prevent exploitation in (unrecommended) use cases where attacker-supplied data can be deserialized

Vulnerability class: Insecure Deserialization

Published 2021-01-04 · last modified 2026-06-17.

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: 0.753 (99.5th percentile), scored 2026-10-17.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.753 · newest: 0.753 · change: 0.000

Affected products

Getlaminas Laminas-Http
Zend Framework — versions 3.0.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

github.com/Ling-Yizhou/zendframework3-/blob/main/zend framework3 反序列化 rce.md (Exploit, Third Party Advisory)
github.com/laminas/laminas-http/commits/2.15.x/src/Response/Stream.php (Patch, Third Party Advisory)
github.com/laminas/laminas-http/pull/48 (Patch, Third Party Advisory)
github.com/laminas/laminas-http/releases/tag/2.14.2 (Third Party Advisory)
research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-cre… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3007?: CVE-2021-3007 is a critical-severity vulnerability in Getlaminas Laminas-Http, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-01-04.
How severe is CVE-2021-3007?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-3007 known to be exploited?: 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.