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CVE-2024-45490 is an input-validation vulnerability in libexpat before version 2.6.3. The flaw is in xmlparse.c, where XML_ParseBuffer does not reject a negative length value. Improper handling of a negative buffer length during XML parsing can lead to unsafe memory operations and undefined behavior in applications that rely on the library to process attacker-controlled XML data. Downstream vendors have described the issue as capable of causing application termination and, in some affected integrations, arbitrary code execution.
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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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A sandbox-escape issue addressed with improved checks.
An open-source vulnerability affecting Apple Vision Pro where a remote attacker could cause app termination or achieve arbitrary code execution; CVE assigned by a third party.
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.