Total
55 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2026-2966 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 2.6 LOW | 3.7 LOW |
| A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. | |||||
| CVE-2025-65502 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 4.3 MEDIUM |
| Null pointer dereference in add_ca_certs() in Cesanta Mongoose before 7.2 allows remote attackers to cause a denial of service via TLS initialization where SSL_CTX_get_cert_store() returns NULL. | |||||
| CVE-2025-51495 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 7.5 HIGH |
| An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17. By sending a specially crafted WebSocket request, an attacker can cause the application to crash. If downstream vendors integrate this component improperly, the issue may lead to a buffer overflow. | |||||
| CVE-2024-42390 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 4.3 MEDIUM |
| Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space. | |||||
| CVE-2024-42389 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 5.3 MEDIUM |
| Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space. | |||||
| CVE-2024-42388 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 5.3 MEDIUM |
| Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space. | |||||
| CVE-2024-42387 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 5.3 MEDIUM |
| Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space. | |||||
| CVE-2024-42383 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 4.2 MEDIUM |
| Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows to write a NULL byte value beyond the memory space dedicated for the hostname field. | |||||
| CVE-2023-34188 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 7.5 HIGH |
| The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests. | |||||
| CVE-2023-2905 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 8.8 HIGH |
| Due to a failure in validating the length of a provided MQTT_CMD_PUBLISH parsed message with a variable length header, Cesanta Mongoose, an embeddable web server, version 7.10 is susceptible to a heap-based buffer overflow vulnerability in the default configuration. Version 7.9 and prior does not appear to be vulnerable. This issue is resolved in version 7.11. | |||||
| CVE-2022-25299 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 5.0 MEDIUM | 9.8 CRITICAL |
| This affects the package cesanta/mongoose before 7.6. The unsafe handling of file names during upload using mg_http_upload() method may enable attackers to write files to arbitrary locations outside the designated target folder. | |||||
| CVE-2021-26530 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 6.4 MEDIUM | 9.1 CRITICAL |
| The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 (compiled with OpenSSL support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool. | |||||
| CVE-2021-26529 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 6.4 MEDIUM | 9.1 CRITICAL |
| The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 and 6.7-6.18 (compiled with mbedTLS support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool. | |||||
| CVE-2021-26528 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 6.4 MEDIUM | 9.1 CRITICAL |
| The mg_http_serve_file function in Cesanta Mongoose HTTP server 7.0 is vulnerable to remote OOB write attack via connection request after exhausting memory pool. | |||||
| CVE-2020-25887 | 1 Cesanta | 1 Mongoose | 2026-06-17 | N/A | 8.8 HIGH |
| Buffer overflow in mg_resolve_from_hosts_file in Mongoose 6.18, when reading from a crafted hosts file. | |||||
| CVE-2020-25756 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| A buffer overflow vulnerability exists in the mg_get_http_header function in Cesanta Mongoose 6.18 due to a lack of bounds checking. A crafted HTTP header can exploit this bug. NOTE: a committer has stated "this will not happen in practice. | |||||
| CVE-2019-19307 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| An integer overflow in parse_mqtt in mongoose.c in Cesanta Mongoose 6.16 allows an attacker to achieve remote DoS (infinite loop), or possibly cause an out-of-bounds write, by sending a crafted MQTT protocol packet. | |||||
| CVE-2019-13503 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| mq_parse_http in mongoose.c in Mongoose 6.15 has a heap-based buffer over-read. | |||||
| CVE-2019-12951 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| An issue was discovered in Mongoose before 6.15. The parse_mqtt() function in mg_mqtt.c has a critical heap-based buffer overflow. | |||||
| CVE-2018-20356 | 1 Cesanta | 1 Mongoose | 2026-06-17 | 7.5 HIGH | 9.8 CRITICAL |
| An invalid read of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution. | |||||