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cesanta

144 CVEs • 5 products

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CVEs (144)

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1Cesanta
1Mongoose
Jun 17, 2026
Feb 8, 2021
N/A· v4
9.1 CRITICAL· v3
6.4 MEDIUM· v2
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.
1Cesanta
1Mongoose
Jun 17, 2026
Sep 18, 2020
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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...Show more
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.Show less
1Cesanta
1Mongoose
Jun 17, 2026
Nov 26, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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.
1Cesanta
1Mongoose
Jun 17, 2026
Jul 11, 2019
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
mq_parse_http in mongoose.c in Mongoose 6.15 has a heap-based buffer over-read.
1Cesanta
1Mongoose
Jun 17, 2026
Jun 24, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An issue was discovered in Mongoose before 6.15. The parse_mqtt() function in mg_mqtt.c has a critical heap-based buffer overflow.
1Cesanta
1Mongoose
Nov 21, 2024
Jun 10, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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...Show more
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.Show less
1Cesanta
1Mongoose
Nov 21, 2024
Jun 10, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An invalid write 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...Show more
An invalid write 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.Show less
1Cesanta
1Mongoose
Nov 21, 2024
Jun 10, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An invalid read of 8 bytes due to a use-after-free vulnerability during a "return" in the mg_http_get_proto_data function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of...Show more
An invalid read of 8 bytes due to a use-after-free vulnerability during a "return" in the mg_http_get_proto_data function 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.Show less
1Cesanta
1Mongoose
Nov 21, 2024
Jun 10, 2019
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An invalid read of 8 bytes due to a use-after-free vulnerability during a "NULL test" in the mg_http_get_proto_data function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial...Show more
An invalid read of 8 bytes due to a use-after-free vulnerability during a "NULL test" in the mg_http_get_proto_data function 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.Show less
1Cesanta
1Mongoose Embedded Web Server Library
Nov 21, 2024
Jun 10, 2019
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Use-after-free vulnerability in the mg_cgi_ev_handler function 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.
1Cesanta
1Mongoose
Nov 21, 2024
Nov 27, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
In Cesanta Mongoose 6.13, a SIGSEGV exists in the mongoose.c mg_mqtt_add_session() function.
1Cesanta
1Mongoose
Nov 21, 2024
Oct 29, 2018
N/A· v4
9.1 CRITICAL· v3
6.4 MEDIUM· v2
An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT S...Show more
An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
Nov 21, 2024
Oct 29, 2018
N/A· v4
9.1 CRITICAL· v3
6.4 MEDIUM· v2
An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in a parse_mqtt getu16 call. A specially crafted MQTT SUBSC...Show more
An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in a parse_mqtt getu16 call. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
Nov 21, 2024
Jun 19, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The mg_handle_cgi function in mongoose.c in Mongoose 6.11 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash, or NULL pointer dereference) via an HTTP request, related...Show more
The mg_handle_cgi function in mongoose.c in Mongoose 6.11 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash, or NULL pointer dereference) via an HTTP request, related to the mbuf_insert function.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause a buffer to be allocated while leaving stale pointers...Show more
An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause a buffer to be allocated while leaving stale pointers which leads to a use-after-free vulnerability which can be exploited to achieve remote code execution. An attacker needs to send a specially crafted websocket packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a heap buffer overflo...Show more
An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a heap buffer overflow and resulting in denial of service and potential remote code execution. An attacker needs to send a specially crafted websocket packet over network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
7.5 HIGH· v3
7.8 HIGH· v2
An infinite loop programming error exists in the DNS server functionality of Cesanta Mongoose 6.8 library. A specially crafted DNS request can cause an infinite loop resulting in high CPU usage and Denial Of Service. An...Show more
An infinite loop programming error exists in the DNS server functionality of Cesanta Mongoose 6.8 library. A specially crafted DNS request can cause an infinite loop resulting in high CPU usage and Denial Of Service. An attacker can send a packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
8.2 HIGH· v3
6.4 MEDIUM· v2
An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read poten...Show more
An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
An exploitable stack buffer overflow vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause a stack buffer overflow resulting in remote...Show more
An exploitable stack buffer overflow vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause a stack buffer overflow resulting in remote code execution. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.Show less
1Cesanta
1Mongoose
May 13, 2026
Nov 7, 2017
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An exploitable NULL pointer dereference vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. An MQTT SUBSCRIBE packet can cause a NULL pointer dereference leading to server crash and den...Show more
An exploitable NULL pointer dereference vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. An MQTT SUBSCRIBE packet can cause a NULL pointer dereference leading to server crash and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.Show less