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CVE-2024-38808 is a denial-of-service vulnerability in Spring Framework affecting versions 5.3.0 through 5.3.38, as well as older unsupported versions. The issue arises when an application evaluates attacker-controlled Spring Expression Language (SpEL) expressions. A specially crafted user-supplied expression can trigger excessive processing in the SpEL evaluation path and cause the application to become unavailable. The vulnerability is only present in applications that accept and evaluate untrusted SpEL input.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A prior Spring Framework SpEL denial-of-service vulnerability used as a direct comparison point for CVE-2026-41850, with lower severity and user interaction required.
A prior Spring Expression Language denial-of-service vulnerability referenced for comparison with CVE-2026-41849.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.