CVE-2024-34102 — Adobe Commerce and Magento Open Source Improper Restriction of XML External Entity Reference (XXE) Vulnerability

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Composer Magento/community-edition: fixed in version 2.4.6-p6 — github.com (GitHub Security Advisories)
• Composer Magento/community-edition: fixed in version 2.4.5-p8 — github.com (GitHub Security Advisories)
• Composer Magento/community-edition: fixed in version 2.4.4-p9 — github.com (GitHub Security Advisories)

CISA required action CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

US federal deadline: Aug 7, 2024 — passed 799 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Adobe Commerce, Adobe Commerce Webhooks, Adobe Magento…).
2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
3. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
4. Apply the fixed version or the patch documented under Remediation.
5. EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
6. Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-611 · XML External Entity (XXE)

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 99.99%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Look for parameters with command/query metacharacters and unexpected child processes of the service.
• Hunt retroactively in logs from before Jul 17, 2024 (KEV listing): exploitation may have started earlier.

Timeline

What happened to this CVE, newest first.

• 2026
• Fix documented
  Oct 13, 2026 · GitHub Security Advisories
• Affected products added · composer/magento/community-edition
  Oct 13, 2026 · GitHub Security Advisories
• Affected products added · adobe/adobe commerce
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• Affected products added · adobe/commerce, adobe/commerce webhooks, adobe/magento
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 9.8
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Analyzed
  Oct 13, 2026 · NIST National Vulnerability Database
• Added to CISA KEV (detected)
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Record created in this database
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• 2024
• Added to CISA KEV catalog
  Jul 16, 2024 · CISA
• CVE published
  Jun 13, 2024 · adobe

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 13, 2026 – Oct 13, 2026
• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

10 on the record

• helpx.adobe.com/security/products/magento/apsb24-40.html
  Vendor Advisory, vendor-advisory, NIST National Vulnerability Database
• www.cisa.gov/known-exploited-vulnerabilities-catalog
  Third Party Advisory, US Government Resource, NIST National Vulnerability Database
• github.com/magento/magento2/commit/c5c538810b87449886f4669cb8abbe8e5593c83c
  GitHub Security Advisories
• github.com/magento/magento2/commit/30877fce83b793f71421c47347885cf076e81799
  GitHub Security Advisories
• github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-communit
  GitHub Security Advisories
• www.vicarius.io/vsociety/posts/cosmicsting-critical-unauthenticated-xxe-vulnerability
  Exploit, Technical Description, Third Party Advisory, NIST National Vulnerability Database
• github.com/advisories/GHSA-m8cj-3v68-3cxj
  GitHub Security Advisories
• github.com/magento/magento2/commit/a3c6d6e5e95e63031e4df26cfcf76feace7549c2
  GitHub Security Advisories
• github.com/magento/magento2/commit/d10435b11ada4e502dca7539f8fd31d059d3c482
  GitHub Security Advisories
• nvd.nist.gov/vuln/detail/CVE-2024-34102
  GitHub Security Advisories

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-95631 Adobe Commerce | Improper Input Validation (CWE-20) 2d
• Medium CVE-2026-95630 Adobe Commerce | Improper Input Validation (CWE-20) 2d
• Critical CVE-2026-92909 Adobe Commerce | Incorrect Authorization (CWE-863) 2d
• Critical CVE-2026-91013 Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79) 2d
• High CVE-2026-92908 Adobe Commerce | Incorrect Authorization (CWE-863) 2d
• Critical CVE-2026-92464 Adobe Commerce | Improper Input Validation (CWE-20) 2d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2024-34102 is "Adobe Commerce and Magento Open Source Improper Restriction of XML External Entity Reference (XXE) Vulnerability", rated Critical. It affects Commerce (Adobe); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 99.99% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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