CVE-2021-22918

Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is used to convert strings to ASCII. The pointer p is read and increased without checking whether it is beyond pe, with the latter holding a pointer to the end of the buffer. This can lead to information disclosures or crashes. This function can be triggered via uv_getaddrinfo().

• CWE-125
• CWE-125

• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
• https://hackerone.com/reports/1209681Exploit, Third Party Advisory
• https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/Patch, Vendor Advisory
• https://security.gentoo.org/glsa/202401-23
• https://security.netapp.com/advisory/ntap-20210805-0003/Third Party Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
• https://hackerone.com/reports/1209681Exploit, Third Party Advisory
• https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/Patch, Vendor Advisory
• https://security.gentoo.org/glsa/202401-23
• https://security.netapp.com/advisory/ntap-20210805-0003/Third Party Advisory

Published

Jul 12, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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