Fixes a bug in Zend Framework's Stream HTTP Wrapper

published 2021-04-21 5 y ago modified 2026-07-08 4 mo ago also GHSA-m496-x567-f98c , EUVD-2021-0845

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

Magento-lts is a long-term support alternative to Magento Community Edition (CE). In magento-lts versions 19.4.12 and prior and 20.0.8 and prior, there is a vulnerability caused by the unsecured deserialization of an object. A patch in versions 19.4.13 and 20.0.9 was back ported from Zend Framework 3. The vulnerability was assigned CVE-2021-3007 in Zend Framework.

Patch / fix

fixed in 2

packagist openmage/magento-lts 19.4.13, 20.0.9
openmage magento 19.4.13, 20.0.9

Exploit prediction

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	openmage/magento-lts	<19.4.13 >=20.0.0, <20.0.9	19.4.13 20.0.9

Affected products

OpenMage magento-lts

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

github.com /OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98c
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-21426
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary