CVE-2006-4197: Multiple buffer overflows in libmusicbrainz (aka mb_client or MusicBrainz Client Library) 2.1.2 and earlier, and SVN 8406 and earlier, allow remote attackers to

Multiple buffer overflows in libmusicbrainz (aka mb_client or MusicBrainz Client Library) 2.1.2 and earlier, and SVN 8406 and earlier, allow remote attackers to

Multiple buffer overflows in libmusicbrainz (aka mb_client or MusicBrainz Client Library) 2.1.2 and earlier, and SVN 8406 and earlier, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via (1) a long Location header by the HTTP server, which triggers an overflow in the MBHttp::Download function in lib/http.cpp; and (2) a long URL in RDF data, as demonstrated by a URL in an rdf:resource field in an RDF XML document, which triggers overflows in many functions in lib/rdfparse.c.

Description from the National Vulnerability Database, published by MITRE

What it means for a small business

If your business uses Libmusicbrainz, install the vendor's update. If you're not sure whether you use it, ask whoever manages your computers.

How likely is an attack? The Exploit Prediction Scoring System, run by FIRST (the global association of security response teams), puts the odds of this one being exploited in the next 30 days at 15%, top 3% of all CVEs. That’s high: fix it ahead of everything else on the list. Scored November 6, 2026, updated daily.

Check your own setup

Website check: reads what your site runs from the outside (WordPress version, plugins it can see, old server software) and matches it against this database.
Server check: what your web server says about itself, and whether that version has known flaws.

Sources

Part of the Huttenlocher Technologies vulnerability database, refreshed twice a day from CISA and the NVD. The title, category and plain-language guidance are ours; check the linked record before acting on a detail. This is general guidance, not a review of your systems.

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