use after free in SMB connection reuse

Answer in brief

CVE-2026-3805 records a Unknown severity vulnerability in use after free in SMB connection reuse. The current sources do not mark it as known exploited. The current feed maps curl/curl (generic), curl/curl (generic), curl/curl (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 11, 2026Updated Sep 14, 2026Source checked Sep 14, 2026First seen by HOL Sep 14, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps curl/curl (generic), curl/curl (generic), curl/curl (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
curl/curlgeneric	>=8.13.0 <8.14.2 \|\| >=8.15.0 <8.16.1 \|\| >=8.17.0 <8.19.0	8.14.2, 8.16.1, 8.19.0
curl/curlgeneric	>=f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e <e090be9f73a7a71459ef678c7cc4b1f75e3ea883	e090be9f73a7a71459ef678c7cc4b1f75e3ea883
curl/curlgeneric	8.18.0 \|\| 8.17.0 \|\| 8.16.0 \|\| 8.15.0 \|\| 8.14.1 \|\| 8.14.0 \|\| 8.13.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for curl/curl, curl/curl, curl/curl.
Review the reported fix. Update curl/curl to 8.14.2; curl/curl to e090be9f73a7a71459ef678c7cc4b1f75e3ea883 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 14, 2026

Sources and claim methodology

Upstream source description

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.

Quoted source text, attributed separately from HOL analysis.