Answer in brief
CVE-2026-8927 records a Critical severity (CVSS 9.1) vulnerability in env-set cross-proxy Digest auth state leak. 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 9.1. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| curl/curlgeneric | >=7.12.0 <8.14.2 || >=8.15.0 <8.16.1 || >=8.17.0 <8.20.1 | 8.14.2, 8.16.1, 8.20.1 |
| curl/curlgeneric | >=fc6eff13b5414caf6edf22d73a3239e074a04216 <5c225384b8d52c67ce8259c6e4203bc57aacb567 | 5c225384b8d52c67ce8259c6e4203bc57aacb567 |
| curl/curlgeneric | 8.20.0 || 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 || 7.39.0 || 7.38.0 || 7.37.1 || 7.37.0 || 7.36.0 || 7.35.0 || 7.34.0 || 7.33.0 || 7.32.0 || 7.31.0 || 7.30.0 || 7.29.0 || 7.28.1 || 7.28.0 || 7.27.0 || 7.26.0 || 7.25.0 || 7.24.0 || 7.23.1 || 7.23.0 || 7.22.0 || 7.21.7 || 7.21.6 || 7.21.5 || 7.21.4 || 7.21.3 || 7.21.2 || 7.21.1 || 7.21.0 || 7.20.1 || 7.20.0 || 7.19.7 || 7.19.6 || 7.19.5 || 7.19.4 || 7.19.3 || 7.19.2 || 7.19.1 || 7.19.0 || 7.18.2 || 7.18.1 || 7.18.0 || 7.17.1 || 7.17.0 || 7.16.4 || 7.16.3 || 7.16.2 || 7.16.1 || 7.16.0 || 7.15.5 || 7.15.4 || 7.15.3 || 7.15.2 || 7.15.1 || 7.15.0 || 7.14.1 || 7.14.0 || 7.13.2 || 7.13.1 || 7.13.0 || 7.12.3 || 7.12.2 || 7.12.1 || 7.12.0 | Not reported |
Published upstream
Jul 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 3, 2026
When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against `proxyA` using Digest auth, a subsequent transfer routed through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended solely for `proxyA`.
Quoted source text, attributed separately from HOL analysis.