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Pico

CVE-2026-72574 is a host header injection vulnerability in picocms/Pico versions prior to 2.1.5. It allows an unauthenticated remote attacker to manipulate the origin of JavaScript and CSS assets loaded by the default theme by exploiting how the base URL is constructed from unvalidated HTTP headers when base_url is unset.

This vulnerability arises from improper neutralization of HTTP headers (CWE-644) in picocms/Pico through version 2.1.4. Specifically, the Pico::getBaseUrl function in lib/Pico.php builds the base URL using unvalidated Host, X-Forwarded-Host, X-Forwarded-Proto, and X-Forwarded-Port headers. When base_url is not explicitly set, this allows an attacker to inject a malicious host header, potentially controlling the origin of JavaScript and CSS assets loaded by the default theme, leading to partial compromise of integrity and confidentiality.

Detailed information about CVE-2026-72574: CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax in picocms Pico affecting picocms Pico. Get rea

CVE-2026-72574: CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax in picocms Pico - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-72574: CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax in picocms Pico

pico

route in main.c in Pico HTTP Server in C through f3b69a6 has an sprintf stack-based buffer overflow via a long URI, leading to remote code execution.

CVE-2024-22087 is a critical security vulnerability identified in the Pico HTTP Server, specifically within the route function implemented in main.c. The vulnerability arises from the use of an unsafe sprintf function call that does not properly validate or limit the length of the input URI. When a specially crafted, excessively long URI is sent to the server, it causes a stack-based buffer overflow (CWE-787). This overflow can overwrite the stack memory, allowing an attacker to execute arbitrary code remotely. The vulnerability requires no authentication or user interaction, making it highly exploitable over the network. The CVSS 3.1 base score of 9.8 reflects the vulnerability's high impact on confidentiality, integrity, and availability, as successful exploitation can lead to full system compromise. Although no patches or vendor information are currently provided, the vulnerability demands urgent attention. The flaw is particularly dangerous in embedded systems or IoT devices where Pico HTTP Server is used due to limited security controls and update mechanisms. The absence of known exploits in the wild does not diminish the urgency, as the vulnerability is straightforward to exploit given the nature of the buffer overflow and the lack of mitigations like ASLR or stack canaries in some embedded environments. Immediate remediation involves replacing unsafe string formatting functions with secure alternatives such as snprintf, implementing strict input validation on URI length, and applying compiler-based protections. Organizations should also monitor network traffic for anomalous long URI requests that could indicate exploitation attempts.

Detailed information about CVE-2024-22087: n/a in n/a affecting n/a n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2024-22087: n/a in n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-22087: n/a


CVE-2026-72574: CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax in picocms PicoCVE-2026-72574 0 CVE-2026-72574 is a host header injection vulnerability in picocms/Pico versions prior to 2.1.5. It allows an unauthenticated remote attacker to manipulate the origin of JavaScript and CSS assets loaded by the default theme by exploiting how the base URL is constructed from unvalidated HTTP headers when base_url is unset. MediumVulnerability#cve #cve-2026-72574 #cwe-644 Join the discussion	CVE Database V5	08/10/2026, 10:40:57 UTC Added: 08/10/2026, 10:56:47 UTC
CVE-2024-22087: n/aCVE-2024-22087 0 route in main.c in Pico HTTP Server in C through f3b69a6 has an sprintf stack-based buffer overflow via a long URI, leading to remote code execution. CriticalVulnerabilityGermanyFranceUnited Kingdom+4#cve #cve-2024-22087 Join the discussion	CVE Database V5	01/05/2024, 00:00:00 UTC Added: 06/03/2025, 14:59:14 UTC

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