VulnerabilityBSI CERT-Bund
GNU libc: Mehrere Schwachstellen
NEOSEC enrichment — no mirror of the original source
Ein lokaler Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes auszuführen, vertrauliche Informationen offenzulegen, den Speicher zu beschädigen oder einen Denial-of-Service-Zustand herbeizuführen.
Source: BSI CERT-Bund. For licensing reasons NEOSEC Intel does not mirror the full text verbatim. The full text and expert commentary are available at the original source.
Read the issue at BSI CERT-BundFull advisory
Lowbsi:WID-SEC-2026-35222 linked CVEs
Open advisory with all CVEs
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- CriticalCVE-2026-106072A flaw in Node.js TLS hostname verification allows a certificate with only a DNS SAN to authenticate an IP endpoint when the client connects using a non-canonical IPv4 spelling, such as `0177.0.0.1`, `0x7f.0.0.1`, `2130706433` or `127.1`. `tls.checkServerIdentity()` did not classify these hosts as IP addresses, but normalized them to their canonical form and matched the result against the certificate DNS names. A certificate containing `DNS:127.0.0.1` and no `IP Address:127.0.0.1` SAN was therefore accepted, while the same certificate is correctly rejected for `127.0.0.1`. Exploitation requires a certificate with a numeric DNS SAN issued by a CA trusted by the client, and a platform resolver that accepts these spellings, such as glibc. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
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Source: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3522
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