sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hos

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

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• Debian:12 sniproxy0.6.0-2.1, 0.6.1+git20240321-0.1, 0.6.1+git20240321-0.1~bpo12+1
• Debian:13 sniproxy0.6.1+git20240321-0.2, 0.7.0-1, 0.7.0-2
• Debian:14 sniproxy0 → 0.7.0-2
• Debian:14 sniproxy0.6.1+git20240321-0.2, 0.7.0-1, 0.7.0-2

How to fix CVE-2026-119760

• Upgrade

  CVE-2026-119760 lists a fix boundary at 0.7.0-2. Compare the installed build with that boundary before you change production.

• Version check

  Fixed in 0.7.0-2 · 9 other ranges on the advisory

• Advisory

  Open the cve_org record and follow its fix.

• Official advisories

  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • Trivy Vulnerability DB · osv.dev

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 30, 2026 · Trivy Vulnerability DB

   Detected

   sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.

2. Oct 31, 2026 · Trivy Vulnerability DB

   Updated

   sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.

3. Nov 5, 2026 · Trivy Vulnerability DB

   Fix available

   sniproxy fixed in 0.7.0-2

4. Nov 5, 2026 · Trivy Vulnerability DB

   Fix available

   sniproxy fixed in 0.7.0-2

5. Nov 5, 2026 · Trivy Vulnerability DB

   Updated

   sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.

Sources

• CVE.orgVulnerability recordCVE-2026-119760

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-119760

  30-day exploitation probability 0.48%

  first.org
• Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-119760

  sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildca

  osv.dev

References

• ADVISORY · security-tracker.debian.org

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

• FIRST EPSSNov 6, 2026
• Trivy Vulnerability DBNov 5, 2026
• CVE.orgOct 31, 2026