Answer in brief
CVE-2026-5773 records a High severity (CVSS 7.5) vulnerability in wrong reuse of SMB connection. 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.
CVSS is 7.5. 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.
The current feed maps curl/curl (generic), curl/curl (generic), curl/curl (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| curl/curlgeneric | >=7.40.0 <8.14.2 || >=8.15.0 <8.16.1 || >=8.17.0 <8.20.0 | 8.14.2, 8.16.1, 8.20.0 |
| curl/curlgeneric | >=aec2e865f06669b9cb5d26cc1148d70bc418b163 <74a169575d6412dc0ff532acdf94de35a6c2a571 | 74a169575d6412dc0ff532acdf94de35a6c2a571 |
| curl/curlgeneric | 8.19.0 || 8.18.0 || 8.17.0 || 8.16.0 || 8.15.0 || 8.14.1 || 8.14.0 || 8.13.0 || 8.12.1 || 8.12.0 || 8.11.1 || 8.11.0 || 8.10.1 || 8.10.0 || 8.9.1 || 8.9.0 || 8.8.0 || 8.7.1 || 8.7.0 || 8.6.0 || 8.5.0 || 8.4.0 || 8.3.0 || 8.2.1 || 8.2.0 || 8.1.2 || 8.1.1 || 8.1.0 || 8.0.1 || 8.0.0 || 7.88.1 || 7.88.0 || 7.87.0 || 7.86.0 || 7.85.0 || 7.84.0 || 7.83.1 || 7.83.0 || 7.82.0 || 7.81.0 || 7.80.0 || 7.79.1 || 7.79.0 || 7.78.0 || 7.77.0 || 7.76.1 || 7.76.0 || 7.75.0 || 7.74.0 || 7.73.0 || 7.72.0 || 7.71.1 || 7.71.0 || 7.70.0 || 7.69.1 || 7.69.0 || 7.68.0 || 7.67.0 || 7.66.0 || 7.65.3 || 7.65.2 || 7.65.1 || 7.65.0 || 7.64.1 || 7.64.0 || 7.63.0 || 7.62.0 || 7.61.1 || 7.61.0 || 7.60.0 || 7.59.0 || 7.58.0 || 7.57.0 || 7.56.1 || 7.56.0 || 7.55.1 || 7.55.0 || 7.54.1 || 7.54.0 || 7.53.1 || 7.53.0 || 7.52.1 || 7.52.0 || 7.51.0 || 7.50.3 || 7.50.2 || 7.50.1 || 7.50.0 || 7.49.1 || 7.49.0 || 7.48.0 || 7.47.1 || 7.47.0 || 7.46.0 || 7.45.0 || 7.44.0 || 7.43.0 || 7.42.1 || 7.42.0 || 7.41.0 || 7.40.0 | Not reported |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 15, 2026
libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a network transfer operation that was requested by an application could wrongfully reuse an existing SMB connection to the same server that was using a different "share" than the new subsequent transfer should. This could in unlucky situations lead to the download of the wrong file or the upload of a file to the wrong place. When this happens, the same credentials are used and the server name is the same.
Quoted source text, attributed separately from HOL analysis.