Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-123571 · CVE overview and exploitation status

EUVD-2026-119456

GHSA-p8hx-6263-88h9

RUSTSEC-2026-0488

GHSA-x962-5xwx-fr8x

cve-program · CVE-2026-123571

• https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-x962-5xwx-fr8x
• https://www.vulncheck.com/advisories/hickory-dns-from-0.26.0-before-0.26.2-panic-via-tsig-rdata-decoding

euvd · EUVD-2026-119456

• https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-x962-5xwx-fr8x
• https://www.vulncheck.com/advisories/hickory-dns-from-0.26.0-before-0.26.2-panic-via-tsig-rdata-decoding

nvd · CVE-2026-123571

• https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-x962-5xwx-fr8x
• https://www.vulncheck.com/advisories/hickory-dns-from-0.26.0-before-0.26.2-panic-via-tsig-rdata-decoding

osv · RUSTSEC-2026-0488

• https://crates.io/crates/hickory-proto
• https://rustsec.org/advisories/RUSTSEC-2026-0488.html
• https://github.com/hickory-dns/hickory-dns/commit/b1246a8a21b6dcc34d427a7d39dd96e10825c384

• Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via malformed records. Attackers can send a crafted TSIG record in DNS wire format to c… · Advisory content revised · 14 Nov 2026
• Integer underflow when reporting a malformed TSIG record · Advisory content revised · 12 Nov 2026
• Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding · Newly collected advisory · 8 Nov 2026