CVE-2018-20834
HighSummary
Wykryto podatność w node-tar przed wersją 4.4.2 (z wyłączeniem wersji 2.2.2). Problem z nadpisywaniem plików występuje podczas rozpakowywania archiwum tar, które zawiera twarde linki do plików już istniejących w systemie, w połączeniu z późniejszym plikiem o tej samej nazwie co twardy link. Zawartość tego pliku zastępuje istniejącą zawartość pliku.
Risk Assessment
Organizacja może być narażona na utratę danych, ponieważ istniejące pliki mogą zostać nadpisane przez niezamierzone operacje rozpakowywania. Może to prowadzić do poważnych problemów z integralnością danych.
Recommendation
Zaleca się aktualizację node-tar do wersji 4.4.2 lub nowszej, aby usunąć tę podatność. Należy również przeanalizować i zabezpieczyć procesy rozpakowywania archiwów tar w systemie.
Related vulnerabilities
- CVE-2026-101001Critical
Vulnerability in Netcore NBR200V2 1.3.241127.071246 in the eval function of /www/cgi-bin/network_tools in the web management interface. Manipulation of the QUERY_STRING argument leads to OS command injection. Remote attack possible, exploit publicly available.
- CVE-2026-101000Critical
Vulnerability in Netcore NBR100V2 1.3.240614.030928 in the uci.apply function of /usr/share/rpcd/acl.d/unauthenticated.json in the ACL Handler component. Manipulation of the section argument leads to missing authorization. Remote attack possible, exploit publicly disclosed.
- CVE-2026-100896Critical
Vulnerability in TOTOLINK N150RT 3.4.0-B20201030 in the system function of /boafrm/formWlSiteSurvey in the web management interface. Manipulation of the wlanif argument leads to OS command injection. Remote attack possible, exploit publicly available.
- CVE-2026-100886Critical
A vulnerability was identified in Seetong T8108, T8108P, T8116 and T8232 version 4.6.1.4-build202604241011. The affected element is an unknown function of the Debug Service component, leading to improper authentication. The attack can be launched remotely and the exploit is publicly available.
- CVE-2026-101090Critical
Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect endpoint. When the dashboard_host setting is empty, /api/v1/oauth2/{provider} reflects the attacker-supplied Host header into the redirect_uri. An attacker can steal the victim's authorization code and take over the account.
- CVE-2026-101084Critical
obot versions before v0.21.1 fail to enforce Access Control Rules on the /mcp-connect endpoint, allowing any authenticated user to connect to restricted MCP servers if they possess the server ID. Attackers can bypass authorization to access sensitive backend systems.
- CVE-2026-101065Critical
Obot up to commit d7e6970, when started via the Docker quickstart from README, listens on 0.0.0.0:8080 with authentication disabled. Every request is mapped to a synthetic 'nobody' user with Owner and Admin roles, granting full administrative access. The quickstart also mounts /var/run/docker.sock, giving access to the host's Docker control surface.
- CVE-2026-88773Critical
HTTP Request/Response Smuggling vulnerability in Citrix NetScaler ADC and Gateway due to inconsistent interpretation of HTTP requests.
- CVE-2026-88772CriticalActively exploited
Vulnerability in Citrix NetScaler ADC and Gateway leading to Remote Code Execution or Denial of Service.
- CVE-2026-88771CriticalActively exploited
Improper input validation in Citrix NetScaler ADC and Gateway allows an unauthenticated attacker to execute arbitrary commands.
Original NVD description (English source)
A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS