CVE-2026-45541
- Source
- https://cve.org/CVERecord?id=CVE-2026-45541
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45541.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-45541
- Aliases
-
- GHSA-3j8v-xgrq-5vg8
- Published
- 2026-06-10T00:25:59.233Z
- Modified
- 2026-07-08T08:13:30.429071436Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- ESF-IDF: Remote Null Pointer Dereference in WebSocket Server
- Details
-
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a NULL-pointer dereference exists in the WebSocket subprotocol-negotiation path of the esphttpserver component. While parsing the client-supplied Sec-WebSocket-Protocol request header during the WebSocket handshake, the tokenisation result is dereferenced without a NULL check, so a malformed header value can crash the server before any application-level authentication runs. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45541.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-476" ] }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45541.json
- https://github.com/espressif/esp-idf/security/advisories/GHSA-3j8v-xgrq-5vg8
- https://nvd.nist.gov/vuln/detail/CVE-2026-45541
- https://github.com/espressif/esp-idf/commit/00a2f7fbbbd8fe6d04729022e1d5c9a49435bfe8
- https://github.com/espressif/esp-idf/commit/0dc4ee7537f3b12350f5966cecacd59bba840ec6
- https://github.com/espressif/esp-idf/commit/37508ab91124ef426a7396d30f79eba1162700c7
- https://github.com/espressif/esp-idf/commit/9fc0ca13b3b85b98d32b98cd9dc8ff9d82642b7b
- https://github.com/espressif/esp-idf/commit/dc46dc51359749e50617eb70d6f9ae298adc4fff
- https://github.com/espressif/esp-idf/commit/f88a47e4f37fb11ae4b0908cd5c80059d83198c6
Affected packages
Git / github.com/espressif/esp-idf
Affected ranges
- Type
- GIT
- Repo
- https://github.com/espressif/esp-idf
- Events
-
IntroducedFixedFixedFixedFixedFixedFixed
- Database specific
{ "source": [ "CPE_STRING", "REFERENCES" ], "cpe": [ "cpe:2.3:a:espressif:esp-idf:5.2.6:*:*:*:*:*:*:*", "cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*", "cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*", "cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*", "cpe:2.3:a:espressif:esp-idf:6.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "5.2.6" }, { "last_affected": "5.2.6" }, { "introduced": "5.3.5" }, { "last_affected": "5.3.5" }, { "introduced": "5.4.4" }, { "last_affected": "5.4.4" }, { "introduced": "5.5.4" }, { "last_affected": "5.5.4" }, { "introduced": "6.0" }, { "last_affected": "6.0" } ] }