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NVD / CVE Program· CNA adobe

CVE-2021-39864: Adobe Commerce Cross-Site Request Forgery (CSRF) Could Lead To Unauthorized Cart Addition

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.6% (FIRST EPSS); higher than 76.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: magento/community-edition (Packagist) 2.3.7-p2.

Low priority for now. Upgrade to magento/community-edition (Packagist) 2.3.7-p2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Adobe Commerce versions 2.4.2-p2 (and earlier), 2.4.3 (and earlier) and 2.3.7p1 (and earlier) are affected by a cross-site request forgery (CSRF) vulnerability via a Wishlist Share Link. Successful exploitation could lead to unauthorized addition to customer cart by an unauthenticated attacker. Access to the admin console is not required for successful exploitation.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Oct 15, 2021
Updated
Jun 17, 2026
EPSS
1.6% · 76th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · adobe
6.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-39864

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
adobecommerce
adobemagento open source

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • adobe commerceup to 2.3.7 inclusive
  • adobe commerce2.3.7
  • adobe commerce2.4.2
  • adobe commerce2.4.3
  • adobe magento open sourceup to 2.3.7 inclusive
  • adobe magento open source2.3.7
  • adobe magento open source2.4.2
  • adobe magento open source2.4.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (adobe). Independent of NVD's CPE analysis and usually ahead of it.

  • Adobe Magento Commerce

    • unspecified and later · up to and including 2.4.3affected
    • unspecified and later · up to and including 2.4.2-p2affected
    • unspecified and later · up to and including 2.3.7-p1affected
    • unspecified and later · up to and including Noneaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistmagento/community-editionfrom 2.4.2 · up to and including 2.4.2—
Packagistmagento/community-editionfrom 2.4.2-p1 · up to and including 2.4.2-p2—
Packagistmagento/community-editionfrom 2.4.3 · up to and including 2.4.3—
Packagistmagento/community-editionbefore 2.3.7-p22.3.7-p2
Packagistmagento/project-community-editionup to and including 2.0.2—

Same product

adobe: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-34102XXE can expose crypt key and other secrets granting full admin accessKEV
    99Now
  • CVE-2022-24086Adobe Commerce checkout improper input validation leads to remote code executionKEV
    99Now
  • CVE-2025-54236Adobe Commerce | Improper Input Validation (CWE-20)KEV
    95Now

Published before and after this one in the same product

  • Later →CVE-2022-34253Aug 16, 2022 · Adobe Commerce XML Injection Arbitrary code execution
    30Monitor
  • Later →CVE-2022-34254Aug 16, 2022 · Adobe Commerce Improper Limitation of a Pathname to a Restricted Directory Arbitrary code execution
    36Monitor
  • Later →CVE-2022-34255Aug 16, 2022 · Adobe Commerce Improper Access Control Privilege escalation
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Packagist:magento/community-edition2.3.7-p2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-352 · Cross-Site Request Forgery (CSRF)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

nvd-secondary

Root cause

State-changing requests rely on the session cookie the browser sends automatically; nothing verifies that the request came from the user’s own page.

The bug in code

The whole CWE-352 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use(session({ cookie: { httpOnly: true } }));app.post("/account/address", updateAddress);

Fixed

ts
app.use(session({ cookie: { httpOnly: true, sameSite: "lax" } }));app.post("/account/address", csrfProtection, updateAddress);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records