{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/perl/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:perl:dbi:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-14739"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["DBI \u003c 1.650","Perl"],"_cs_severities":["critical"],"_cs_tags":["vulnerability","heap-overflow","perl","dbi","cve"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eThe Microsoft Security Response Center (MSRC) has published details regarding CVE-2026-14739, a critical heap overflow vulnerability affecting versions of the DBI module for Perl prior to 1.650. This flaw can be triggered when the DBI module attempts to preparse SQL statements containing an extremely large number of placeholders. Successful exploitation could lead to memory corruption, potentially enabling an attacker to execute arbitrary code within the context of the affected application or cause a denial of service (DoS) by crashing the application. This vulnerability highlights the importance for organizations to maintain updated third-party dependencies, even in widely used languages like Perl, to mitigate risks associated with memory corruption and potential system compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker crafts a malicious SQL statement containing an extremely large number of placeholders.\u003c/li\u003e\n\u003cli\u003eThe attacker submits this malformed SQL statement to a vulnerable application utilizing the Perl DBI module (versions prior to 1.650).\u003c/li\u003e\n\u003cli\u003eThe vulnerable DBI module attempts to preparse the crafted SQL statement for execution.\u003c/li\u003e\n\u003cli\u003eDuring the preparsing operation, the excessive number of placeholders triggers a heap overflow condition.\u003c/li\u003e\n\u003cli\u003eThis heap overflow leads to memory corruption within the application's process space.\u003c/li\u003e\n\u003cli\u003eDepending on the specific memory corruption, the attacker may achieve arbitrary code execution on the underlying system.\u003c/li\u003e\n\u003cli\u003eAlternatively, the memory corruption can cause the application to crash, resulting in a denial of service.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-14739 could allow an attacker to gain control over the affected system by executing arbitrary code. Alternatively, the vulnerability could be used to trigger a denial of service, rendering critical applications unavailable. The extent of the impact depends on the privileges of the affected Perl application and the sensitivity of the data it processes. Organizations using vulnerable versions of the DBI module are at risk of system compromise or operational disruption if their applications process untrusted SQL input.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately update the DBI module for Perl to version 1.650 or later to patch CVE-2026-14739.\u003c/li\u003e\n\u003cli\u003eReview applications utilizing Perl's DBI module to ensure they are processing SQL statements with parameterized queries safely and are not susceptible to excessive placeholder input from untrusted sources.\u003c/li\u003e\n\u003cli\u003eMonitor application logs for unexpected crashes or errors related to database interactions, which might indicate attempted exploitation of CVE-2026-14739.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-11T07:40:01Z","date_published":"2026-07-11T07:40:01Z","id":"https://feed.craftedsignal.io/briefs/2026-07-cve-2026-14739-dbi-perl-heap-overflow/","summary":"CVE-2026-14739 details a heap overflow vulnerability affecting DBI for Perl versions prior to 1.650, which arises during the preparsing of SQL statements with an excessive number of placeholders, potentially leading to arbitrary code execution or a denial of service.","title":"CVE-2026-14739 DBI for Perl Heap Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-07-cve-2026-14739-dbi-perl-heap-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed - Perl","version":"https://jsonfeed.org/version/1.1"}