CVE-2026-1525
MediumSummary
Undici pozwala na duplikowanie nagłówków HTTP Content-Length, gdy są one podawane w tablicy z nazwami o różnych wielkościach liter (np. Content-Length i content-length). To prowadzi do nieprawidłowych żądań HTTP/1.1 z wieloma sprzecznymi wartościami Content-Length.
Risk Assessment
Aplikacje korzystające z Undici mogą generować błędne żądania HTTP, co może prowadzić do problemów z komunikacją i bezpieczeństwem danych. Potencjalne ataki mogą wykorzystać te nieprawidłowości do manipulacji danymi przesyłanymi przez sieć.
Recommendation
Zaleca się monitorowanie i aktualizację aplikacji korzystających z Undici, aby zapewnić poprawne zarządzanie nagłówkami HTTP. Należy również rozważyć walidację nagłówków przed ich przetworzeniem.
Related vulnerabilities
- CVE-2026-95606Critical
Deserialization of untrusted data vulnerability in The Events Calendar plugin allows object injection. Affects versions up to 6.17.4.
- CVE-2026-95605Critical
SQL injection vulnerability in WP Data Access allows blind SQL injection. Affects versions up to 5.5.82.
- CVE-2026-76501Critical
Vulnerability in SRv6 OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM and SRv6 features are enabled.
- CVE-2026-76500Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper control of a resource through its lifetime (CWE-664). These have been addressed in hardening releases.
- CVE-2026-76499Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper neutralization issues (CWE-707). These have been addressed in hardening releases.
- CVE-2026-76498Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper access control (CWE-284). These have been addressed in hardening releases.
- CVE-2026-76486Critical
Vulnerability in VXLAN OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM is enabled.
- CVE-2026-76485Critical
Vulnerability in VXLAN OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM is enabled.
- CVE-2026-76483Critical
A security review in Cisco License On-Prem (formerly SSM On-Prem) revealed multiple vulnerabilities related to insufficiently protected credentials (CWE-522). These have been addressed in hardening releases.
- CVE-2026-76482Critical
A security review in Cisco License On-Prem (formerly SSM On-Prem) revealed multiple vulnerabilities related to improper input verification (CWE-347). These have been addressed in hardening releases.
Original NVD description (English source)
Undici allows duplicate HTTP Content-Length headers when they are provided in an array with case-variant names (e.g., Content-Length and content-length). This produces malformed HTTP/1.1 requests with multiple conflicting Content-Length values on the wire. Who is impacted: * Applications using
Vulnerability data from NVD (NIST) · CISA KEV · EPSS