Cesnet Libyang
18 CVEs affecting Cesnet Libyang. Latest disclosed: 2026-05-14. Critical: 2, High: 10.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2019-19334 | Critical | 9.8 | 2019-12-06 | In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "identityref"… |
CVE-2019-19333 | Critical | 9.8 | 2019-12-06 | In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "bits". An appl… |
CVE-2019-20397 | High | 8.8 | 2020-01-22 | A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is not terminated. Applications that use libyang to par… |
CVE-2019-20394 | High | 8.8 | 2020-01-22 | A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement. Applications that use l… |
CVE-2019-20393 | High | 8.8 | 2020-01-22 | A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untruste… |
CVE-2026-44673 | High | 7.5 | 2026-05-14 | libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap… |
CVE-2023-26917 | High | 7.5 | 2023-04-11 | libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lysp_stmt_validate_value at lys_parse_mem.c. |
CVE-2021-28906 | High | 7.5 | 2021-05-20 | In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to… |
CVE-2021-28905 | High | 7.5 | 2021-05-20 | In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which… |
CVE-2021-28904 | High | 7.5 | 2021-05-20 | In function ext_get_plugin() in libyang <= v1.0.225, it doesn't check whether the value of revision is NULL. If revision is NULL, the operation of strcmp(revis… |
CVE-2021-28903 | High | 7.5 | 2021-05-20 | A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem(). lyxml_parse_elem() function will be called recursivel… |
CVE-2021-28902 | High | 7.5 | 2021-05-20 | In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which lea… |
CVE-2019-20398 | Medium | 6.5 | 2020-01-22 | A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_re… |
CVE-2019-20396 | Medium | 6.5 | 2020-01-22 | A segmentation fault is present in yyparse in libyang before v1.0-r1 due to a malformed pattern statement value during lys_parse_path parsing. |
CVE-2019-20395 | Medium | 6.5 | 2020-01-22 | A stack consumption issue is present in libyang before v1.0-r1 due to the self-referential union type containing leafrefs. Applications that use libyang to par… |
CVE-2019-20392 | Medium | 6.5 | 2020-01-22 | An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list k… |
CVE-2019-20391 | Medium | 6.5 | 2020-01-22 | An invalid memory access flaw is present in libyang before v1.0-r3 in the function resolve_feature_value() when an if-feature statement is used inside a bit. A… |
CVE-2023-26916 | Medium | 5.3 | 2023-04-03 | libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lys_parse_mem at lys_parse_mem.c. |