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CVE-2019-7855

Magento 2 Community Cryptographic Flaw

5.3 MediumFix available

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.97%Up 0.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.3

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
CVE-2019-7855
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-338
Updated
2026-11-02
CVE List No score

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
CVE-2019-7855
Updated
2026-11-02
EUVDEUVD-2022-2056 No score

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
EUVD-2022-2056
Updated
2026-11-03
GitHub AdvisoriesGHSA-2w26-gmqm-mc5p 5.3

Magento 2 Community Cryptographic Flaw

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
GHSA-2w26-gmqm-mc5p
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-338
Updated
2026-11-02
OSV 5.3

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
CVE-2019-7855
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVGHSA-2w26-gmqm-mc5p 5.3

Magento 2 Community Cryptographic Flaw

A cryptograhic flaw in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 could be abused by an unauthenticated user to discover an invariant used in gift card generation.

Record
GHSA-2w26-gmqm-mc5p
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-338
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
magento/community-edition
Packagist
 2.1.0 up to 2.1.18
2.1.18
magento/community-edition
Packagist
 2.2.0 up to 2.2.9
2.2.9
magento/community-edition
Packagist
 2.3.0 up to 2.3.2
2.3.2
magento/community-edition
Packagist
 2.1.0 up to 2.1.18, plus listed versions
2.1.12.1.102.1.112.1.122.1.13
Show 12 moreShow less
2.1.142.1.152.1.162.1.172.1.22.1.32.1.42.1.52.1.62.1.72.1.82.1.9
2.1.18
magento/community-edition
Packagist
 2.2.0 up to 2.2.9, plus listed versions
2.2.12.2.22.2.32.2.42.2.52.2.62.2.72.2.8
2.2.9
magento/community-edition
Packagist
 2.3.0 up to 2.3.2, plus listed versions
2.3.1
2.3.2

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-7855 is a medium vulnerability (CVSS 5.3) in Adobe Systems Incorporated Magento 2, published August 2, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 62nd percentile. Fixed in magento/community-edition 2.1.18.

References

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