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CVE-2026-119760high8.7

sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()

Impact

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.

Source excerpt · VulnCheck

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

dlundquist · VulnCheck

sniproxy

1 range
VulnCheck version evidence

Package identity

pkg:github/dlundquist/sniproxy

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → through 0.7.0

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

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.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119760

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-476 ↗

NULL Pointer Dereference

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:sniproxy_project:sniproxy:*:*:*:*:*:*:*:*

Through (inclusive): 0.7.0

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:sniproxy_project:sniproxy:*:*:*:*:*:*:*:*",
            "versionEndIncluding": "0.7.0"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 1
VulnCheck

Assigning organization

2026-10-30

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

7 sources
github.com/renaudallard/sniproxy/commit/d5d78290c8fe15d9aa12185d2c57739b7b0c6a6b
patchVulnCheck
github.com/renaudallard/sniproxy/commit/17986ba7397297313331297cac3b9eb3f0ba96b7
patchVulnCheck
github.com/dlundquist/sniproxy/issues/411
issue-trackingVulnCheck
github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/connection.c
technical-descriptionVulnCheck
github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/resolv.c
technical-descriptionVulnCheck
github.com/dlundquist/sniproxy
productVulnCheck
View 1 more references
www.vulncheck.com/advisories/sniproxy-through-0.7.0-null-pointer-dereference-via-resolv-cancel
third-party-advisoryVulnCheck