CVE-2023-54354

Nokogiri before 1.14.3 (CRuby implementation only, when using the packaged libxml2) bundles libxml2 v2.10.3, which is vulnerable to NULL pointer dereferences in XML Schema processing (xmlSchemaFixupComplexType, CVE-2023-28484, and xmlSchemaCheckCOSSTDerivedOK). An attacker who supplies a crafted/malformed XML schema can cause libxml2 to dereference a NULL pointer and potentially segfault, resulting in a denial of service. Nokogiri 1.14.3 upgrades the packaged libxml2 to v2.10.4 to resolve these issues.

Scoring

Severity

HIGH

CVSS base score

8.7

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS probability

0.35%

CWE

CWE-476

Published

2026-08-25

Last modified

2026-09-08

Affected products

• sparklemotion nokogiri
• sparklemotion nokogiri

Weakness type

• CWE-476

Related vulnerabilities

• CVE-2026-55209 — resdata insufficiently validates untrusted GRDECL files
• CVE-2026-58161 — Apache Traffic Server: Memory-safety errors in TLS and SNI handling can crash the server
• CVE-2026-42766 — Possible NULL Dereference in Password-Based CMS Decryption
• CVE-2026-60109 — Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing
• CVE-2026-67304 — FreeRDP before 3.29.0 NULL Dereference via smartcard cleanup
• CVE-2026-67288 — FreeRDP before 3.29.0 Denial of Service via smartcard cache
• CVE-2026-55204 — HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
• CVE-2026-13084 — Null Pointer Dereference in WatchGuard Fireware OS iked Process

Markdown version · Browse all CVEs