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CVE-2021-33813 is an XML External Entity (XXE) vulnerability in the SAXBuilder XML parser in JDOM through version 2.0.6. SAXBuilder permits external-entity processing when parsing attacker-controlled XML. A crafted XML payload delivered through an application HTTP request can trigger entity expansion and exhaust resources, causing denial of 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 valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Vulnerability referenced by HPE as affecting HPE Telco Universal SLA Management <=4.6; specific technical details not provided in the bulletin excerpt.
JDOM XML external entity issue enabling denial of service using a crafted HTTP request.
A JDOM XML external entity vulnerability that allows denial of service through a crafted HTTP request.
An XML external entity (XXE) vulnerability in JDOM that can allow denial of service through a crafted HTTP request.
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.