{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/products/pcre-all-versions/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["PCRE (all versions)","PCRE"],"_cs_severities":["medium"],"_cs_tags":["denial-of-service","pcre","vulnerability","remote-code-execution","library-vulnerability","software-supply-chain"],"_cs_type":"advisory","_cs_vendors":["PCRE"],"content_html":"\u003cp\u003eThe Perl Compatible Regular Expressions (PCRE) library contains a security flaw that allows a local attacker to trigger a Denial of Service (DoS) condition. The vulnerability stems from how the library handles specific regular expression patterns, which, when processed, can lead to memory corruption or excessive resource consumption, ultimately resulting in the crash of any application or service that links to the affected PCRE version. Because PCRE is a fundamental dependency for a wide range of software, including web servers, security tools, and data processing utilities, the impact of this vulnerability is widespread. Defenders should identify applications within their environment that statically or dynamically link against the affected PCRE library and ensure they are updated to a patched version once released by the upstream maintainers.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability leads to the termination of the vulnerable process. While the primary impact is service disruption (Denial of Service), the local requirement for exploitation generally limits the scope to attackers who have already obtained restricted or low-privileged access to the host system. Affected sectors include any organization relying on software that utilizes PCRE for pattern matching.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eIdentify applications using the PCRE library by scanning dependency manifests or using system-level binary analysis tools (e.g., ldd on Linux or dependency walker tools on Windows) to find linked PCRE shared objects.\u003c/li\u003e\n\u003cli\u003eMonitor application crash logs for frequent process termination events or sudden spikes in memory usage when processing regex-heavy input, which may indicate exploitation attempts.\u003c/li\u003e\n\u003cli\u003ePatch all software products identified as utilizing the affected PCRE library immediately upon the availability of vendor-supplied updates.\u003c/li\u003e\n\u003c/ol\u003e\n","date_modified":"2026-10-08T04:47:09Z","date_published":"2026-10-07T16:53:36Z","id":"https://feed.craftedsignal.io/briefs/2026-10-pcre-dos/","summary":"A local Denial of Service vulnerability exists in the PCRE library due to improper processing of specifically crafted regular expressions that cause application crashes.","title":"Denial of Service Vulnerability in PCRE","url":"https://feed.craftedsignal.io/briefs/2026-10-pcre-dos/"}],"language":"en","title":"CraftedSignal Threat Feed - PCRE (All Versions)","version":"https://jsonfeed.org/version/1.1"}