MO
Product
mongoose
61
CVEs
0
On KEV
9.8
Max CVSS
4
New 30D
Severity mix
Critical 23High 22Medium 12Low 4
Watch
Add mongoose to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2026-5244 | 9.8 | Apr 2 | Cesanta Mongoose TLS 1.3 mongoose.c mg_tls_recv_cert heap-based overflow Affected: 7.0; 7.1; 7.2; 7.3; 7.4; 7.5; +15 more |
| CVE-2024-42383 | 9.8 | Nov 18 | 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 Affected: through 7.14 |
| CVE-2020-25756 | 9.8 | Sep 18 | A buffer overflow vulnerability exists in the mg_get_http_header function in Cesanta Mongoose 6.18 due to a lack of bounds checking Affected: 6.18 |
| CVE-2019-19307 | 9.8 | Nov 26 | 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… Affected: 6.16 |
| CVE-2019-12951 | 9.8 | Jun 24 | An issue was discovered in Mongoose before 6.15 Affected: before 6.15 |
| CVE-2018-20356 | 9.8 | Jun 10 | 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… Affected: through 6.13 |
| CVE-2018-20355 | 9.8 | Jun 10 | 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… Affected: through 6.13 |
| CVE-2018-20354 | 9.8 | Jun 10 | 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… Affected: through 6.13 |
| CVE-2018-20353 | 9.8 | Jun 10 | 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… Affected: through 6.13 |
| CVE-2017-2922 | 9.8 | Nov 7 | An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2017-2921 | 9.8 | Nov 7 | An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2017-2894 | 9.8 | Nov 7 | An exploitable stack buffer overflow vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2017-2892 | 9.8 | Nov 7 | An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2017-2891 | 9.8 | Nov 7 | An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2026-73253 | 9.1 | Aug 20 | Mongoose: TLS Hostname Verification Bypass via Overly Permissive Wildcard Matching Affected: < 7.22 |
| CVE-2026-73256 | 9.1 | Aug 20 | Mongoose: HTTP/1.0 detection off-by-one enables request smuggling via chunked TE Affected: < 7.22 |
| CVE-2026-73251 | 9.1 | Aug 20 | Mongoose Built-in TLS: CA-bundle certificate chain accepted without any signature verification Affected: < 7.23 |
| CVE-2026-73257 | 9.1 | Aug 20 | Mongoose: Content-Length + Transfer-Encoding coexistence enables request smuggling Affected: < 7.22 |
| CVE-2021-26530 | 9.1 | Feb 8 | 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… Affected: 7.0 |
| CVE-2021-26529 | 9.1 | Feb 8 | 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… Affected: 6.7 through 6.18; 7.0 |
| CVE-2021-26528 | 9.1 | Feb 8 | 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 Affected: 7.0 |
| CVE-2018-18765 | 9.1 | Oct 29 | An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13 Affected: 6.13 |
| CVE-2018-18764 | 9.1 | Oct 29 | An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13 Affected: 6.13 |
| CVE-2026-63626 | 8.8 | Oct 14 | Mongoose: ppp_handle_ipv6cp() uses attacker-controlled length without bounds check — OOB read and heap overflow (PPP/PPPoE, MG_ENABLE_IPV6) Affected: < 7.23 |
| CVE-2020-25887 | 8.8 | Aug 22 | Buffer overflow in mg_resolve_from_hosts_file in Mongoose 6.18, when reading from a crafted hosts file Affected: 6.18 |
| CVE-2023-2905 | 8.8 | Aug 9 | 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… Affected: 7.10 |
| CVE-2017-2895 | 8.2 | Nov 7 | An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2026-5246 | 8.1 | Apr 2 | Cesanta Mongoose P-384 Public Key mongoose.c mg_tls_verify_cert_signature authorization Affected: 7.0; 7.1; 7.2; 7.3; 7.4; 7.5; +15 more |
| CVE-2026-5245 | 8.1 | Apr 2 | Cesanta Mongoose mDNS Record mongoose.c handle_mdns_record stack-based overflow Affected: 7.0; 7.1; 7.2; 7.3; 7.4; 7.5; +15 more |
| CVE-2026-73261 | 7.5 | Oct 14 | Mongoose: handle_opt() missing opts[1] > len check — 1-byte OOB read corrupts TCP MSS, silences mg_send() per connection Affected: < 7.23 |
| CVE-2026-73260 | 7.5 | Oct 14 | Mongoose: Out-of-bounds Read via length-counter underflow in built-in TLS X.509 DER parser Affected: < 7.23 |
| CVE-2026-73252 | 7.5 | Oct 14 | Mongoose: Unauthenticated remote heap out-of-bounds read in built-in TLS: off-by-one length check in mg_tls_recv_record() underflows recv_len to SIZE_MAX Affected: < 7.23 |
| CVE-2026-11404 | 7.5 | Jul 9 | Cesanta Mongoose Out-of-Bounds Read in MG_TLS_BUILTIN ClientHello Session ID Parsing Affected: before 7.22 |
| CVE-2026-6985 | 7.5 | Apr 25 | Cesanta Mongoose TCP Option net_builtin.c handle_opt infinite loop Affected: 7.0; 7.1; 7.2; 7.3; 7.4; 7.5; +15 more |
| CVE-2025-51495 | 7.5 | Sep 29 | An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17 Affected: 7.5 through 7.17 |
| CVE-2024-42392 | 7.5 | Nov 18 | Improper Neutralization of Delimiters vulnerability in Cesanta Mongoose Web Server v7.14 allows to trigger an infinite loop bug if the input string contains unexpected characters Affected: through 7.14 |
| CVE-2024-42386 | 7.5 | Nov 18 | 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 produce a segmentation fault on the… Affected: through 7.14 |
| CVE-2024-42384 | 7.5 | Nov 18 | Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the… Affected: through 7.14 |
| CVE-2023-34188 | 7.5 | Jun 23 | The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers Affected: before 7.10 |
| CVE-2022-25299 | 7.5 | Feb 18 | This affects the package cesanta/mongoose before 7.6 Affected: before 7.6 |
| CVE-2019-13503 | 7.5 | Jul 11 | mq_parse_http in mongoose.c in Mongoose 6.15 has a heap-based buffer over-read Affected: 6.15 |
| CVE-2018-10945 | 7.5 | Jun 19 | 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… Affected: 6.11 |
| CVE-2017-2909 | 7.5 | Nov 7 | An infinite loop programming error exists in the DNS server functionality of Cesanta Mongoose 6.8 library Affected: 6.8 |
| CVE-2017-2893 | 7.5 | Nov 7 | An exploitable NULL pointer dereference vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8 Affected: 6.8 |
| CVE-2024-42385 | 7.0 | Nov 18 | Improper Neutralization of Delimiters vulnerability in Cesanta Mongoose Web Server v7.14 allows to trigger an out-of-bound memory write if the PEM certificate contains unexpected… Affected: through 7.14 |
| CVE-2026-73255 | 6.5 | Aug 20 | Mongoose: Path traversal in SSI #include directives enables arbitrary file read Affected: < 7.22 |
| CVE-2026-73258 | 6.5 | Aug 20 | Mongoose: Multipart boundary/header scan logic error in mg_http_next_multipart Affected: < 7.22 |
| CVE-2018-19587 | 6.5 | Nov 27 | In Cesanta Mongoose 6.13, a SIGSEGV exists in the mongoose.c mg_mqtt_add_session() function Affected: 6.13 |
| CVE-2026-73259 | 5.4 | Aug 20 | Mongoose: Reflected XSS via decoded URI in directory listing render Affected: < 7.22 |
| CVE-2026-73254 | 5.4 | Aug 20 | Mongoose: Stored XSS via unescaped filenames in directory listing Affected: < 7.22 |
