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CVE-2026-59873 is a denial-of-service vulnerability in node-tar, a Node.js tar archive manipulation library. Versions before 7.5.19 do not enforce hard upper bounds on total decompressed data, archive entry counts, or decompression ratio in extraction and parsing paths, including src/extract.ts. A small crafted gzip archive can therefore expand without effective limits, consuming CPU and disk space.
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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.
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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.
36 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Denial of service in node-tar through a crafted gzip bomb.
node-tar denial of service through a crafted gzip bomb.
A network-reachable, low-complexity vulnerability in the TencentOS Server 3 Node.js packaging component with no required privileges or user interaction. The provided CVSS vector indicates high impact to availability, including subsequent-system availability.
A network-reachable, low-complexity vulnerability requiring no privileges or user interaction, with high availability impact according to the supplied CVSS v3 and v4 vectors. It is covered by the TencentOS Server 3 Node.js packaging advisory.
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.