CosmicSting (CVE-2024-34102) is a critical Magento 2 and Adobe Commerce vulnerability that, when chained, can lead to remote code execution. It was used to compromise thousands of stores. MageArgus checks your exposure for free in seconds by fingerprinting your version and patch level.
What is CosmicSting (CVE-2024-34102)?
CosmicSting is an XML external entity (XXE) vulnerability in Magento’s REST API. On its own it leaks files; chained with a second issue it has been used for full remote code execution. After disclosure it became one of the most widely exploited Magento CVEs, with thousands of stores compromised in automated campaigns.
Because exploitation depends on running an unpatched version, the single most useful thing you can know is whether your store is on a fixed release — which is exactly what this check tells you.
How the CosmicSting check works
Fingerprint
We detect your Magento / Adobe Commerce version from public signals.
Map to CVE-2024-34102
Your version is compared against the patched releases and the isolated CosmicSting hotfix.
Remediate
You get the verdict plus the exact upgrade/patch step and post-patch checklist.
Already patched CosmicSting? Don’t stop there
Many stores that patched late were already breached before the fix went on. Patching closes the door but does not evict an attacker who is already inside. If your store ran unpatched for any meaningful window after June 2024, treat it as potentially compromised:
- Check for unknown admin users and integration tokens.
- Look for injected content in CMS blocks, pages and config.
- Run a full malware scan — see Magento malware removal.