{"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/vendors/pcre/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:magazine3:schema_\\\u0026_structured_data_for_wp_\\\u0026_amp:*:*:*:*:*:wordpress:*:*","cpe:2.3:a:blazethemes:newsmatic:*:*:*:*:*:wordpress:*:*"],"_cs_cves":[{"cvss":6.4,"id":"CVE-2024-1586"},{"cvss":5.3,"id":"CVE-2024-1587"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["PCRE2"],"_cs_severities":["high"],"_cs_tags":["vulnerability","pcre2","dos"],"_cs_type":"advisory","_cs_vendors":["PCRE"],"content_html":"\u003cp\u003eThe Perl Compatible Regular Expressions (PCRE2) library contains multiple vulnerabilities that can be exploited by remote, unauthenticated attackers. These vulnerabilities, identified as CVE-2024-1586 and CVE-2024-1587, arise from improper handling of regular expressions during the parsing and execution phases. By providing specially crafted regular expression patterns or input data to applications that utilize the vulnerable PCRE2 library, an attacker can trigger memory management errors. Depending on the implementation, these flaws lead to application crashes, resulting in a Denial of Service (DoS) condition, or potential exposure of sensitive information residing in memory. Because PCRE2 is a foundational component widely integrated into diverse software - including web servers, database systems, and security appliances - the scope of potentially affected infrastructure is significant across Linux, Windows, and macOS environments. Organizations should identify applications bundling the PCRE2 library and monitor security updates from their respective software vendors.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can lead to service disruption and potential data leakage. The impact is significant due to the library's ubiquity in middleware and application stacks, where an attacker could crash critical services or potentially leak memory contents, such as encryption keys or session tokens, depending on the specific host application's memory layout.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAudit software inventories to identify applications that rely on the PCRE2 library.\u003c/li\u003e\n\u003cli\u003ePrioritize patching for internet-facing applications and network security appliances that use PCRE2 for regex processing.\u003c/li\u003e\n\u003cli\u003eMonitor application logs for unexpected crashes or error patterns indicative of resource exhaustion or memory access violations.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-10-07T16:54:08Z","date_published":"2026-10-07T16:54:08Z","id":"https://feed.craftedsignal.io/briefs/2026-10-pcre-vulnerabilities/","summary":"Multiple vulnerabilities in the PCRE2 library allow a remote, unauthenticated attacker to cause a denial of service (DoS) condition or perform sensitive information disclosure.","title":"Multiple Vulnerabilities in PCRE2 Library","url":"https://feed.craftedsignal.io/briefs/2026-10-pcre-vulnerabilities/"},{"_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","version":"https://jsonfeed.org/version/1.1"}