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CVE-2026-93657VulnerabilityPublished

Red Hat Security Advisory: rust-sequoia-sq security update

Affects Red Hat rust-sequoia-sqSource GCVE Database

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Authoritative record:CVE-2026-93657· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade Red Hat hickory-resolver to 0.26.2 soon.

Data as of 11 Nov 2026, 02:22 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.26.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade hickory-resolver to 0.26.2.

Affected software

ProductAffectedFixed in
hickory-dnshickory-resolverAffected
  • <0.26.2
Fixed in
  • 0.26.2
crates.iohickory-resolverpkg:cargo/hickory-resolverOther threatsAffected
  • <0.26.2
Fixed in
  • 0.26.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated rust-sequoia-sq packages that fix this vulnerability. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:97868) and the referenced article https://access.redhat.com/articles/11258 to remediate the issue. No additional mitigation steps are indicated beyond applying the official patch.

Description

A security vulnerability (CVE-2026-93657) in the hickory-resolver component of rust-sequoia-sq allows DNSSEC validation bypass, enabling forged DNS records. This issue affects Red Hat Enterprise Linux 9 across multiple architectures. Red Hat has released an important security update to address this vulnerability.

References

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