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CVE-2024-29041 is an open redirect vulnerability in Express.js redirect handling. When an application passes a user-controlled URL to res.location(), Express applies encodeurl before emitting the value in the HTTP Location header. Malformed URL input can consequently be interpreted differently from the value assessed by common redirect allowlist implementations, enabling a bypass of an otherwise correctly implemented allowlist. res.redirect() is also affected because it invokes res.location(). The issue affects Express.js versions prior to 4.19.0 and all 5.0 alpha and beta prereleases; the complete fix is available in Express.js 4.19.2 and 5.0.0-beta.3.
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What an attacker gets, and what they’ve been doing with it.
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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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Express that causes malformed URLs to be evaluated.
An Express vulnerability that causes malformed URLs to be evaluated.
An Express vulnerability in which malformed URLs can be evaluated.
A flaw in Express that causes malformed URLs to be evaluated.
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.