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Mailpit contains an unauthenticated denial-of-service vulnerability caused by accepting unbounded JSON request bodies on multiple API endpoints. The issue is described as an incomplete fix for an earlier related vulnerability, where request body size limiting was applied insufficiently and additional JSON-body handlers remained exposed. By sending oversized JSON payloads to affected API handlers, a remote attacker can trigger significant memory amplification in the Mailpit process, eventually exhausting available memory and destabilizing or terminating the service.
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What an attacker gets, and what they’ve been doing with it.
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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.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.