Description (CNA)
curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the following conditions are true: 1. curl is setup to use specific different proxies for different URL schemes 2. the first proxy needs credentials 3. the second proxy uses no credentials 4. while using the first proxy (using say `http://`), curl is asked to follow a redirect to a URL using another scheme (say `https://`), accessed using a second, different, proxy
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| curl / curl | affected 7.14.1 before 8.14.2; affected 8.15.0 before 8.16.1; affected 8.17.0 before 8.20.0 |
| curl / curl | affected 3b60bb725913ce7339aefef0a14b12df4c24db60 before 188c2f166a20fa97c2325b2da7d0e5cecc13725f |
| curl / curl | affected 8.19.0; affected 8.18.0; affected 8.17.0; affected 8.16.0; affected 8.15.0; affected 8.14.1; affected 8.14.0; affected 8.13.0; affected 8.12.1; affected 8.12.0; affected 8.11.1; affected 8.11.0; affected 8.10.1; affected 8.10.0; affected 8.9.1; affected 8.9.0; affected 8.8.0; affected 8.7.1; affected 8.7.0; affected 8.6.0; affected 8.5.0; affected 8.4.0; affected 8.3.0; affected 8.2.1; affected 8.2.0; affected 8.1.2; affected 8.1.1; affected 8.1.0; affected 8.0.1; affected 8.0.0; affected 7.88.1; affected 7.88.0; affected 7.87.0; affected 7.86.0; affected 7.85.0; affected 7.84.0; affected 7.83.1; affected 7.83.0; affected 7.82.0; affected 7.81.0; affected 7.80.0; affected 7.79.1; affected 7.79.0; affected 7.78.0; affected 7.77.0; affected 7.76.1; affected 7.76.0; affected 7.75.0; affected 7.74.0; affected 7.73.0; affected 7.72.0; affected 7.71.1; affected 7.71.0; affected 7.70.0; affected 7.69.1; affected 7.69.0; affected 7.68.0; affected 7.67.0; affected 7.66.0; affected 7.65.3; affected 7.65.2; affected 7.65.1; affected 7.65.0; affected 7.64.1; affected 7.64.0; affected 7.63.0; affected 7.62.0; affected 7.61.1; affected 7.61.0; affected 7.60.0; affected 7.59.0; affected 7.58.0; affected 7.57.0; affected 7.56.1; affected 7.56.0; affected 7.55.1; affected 7.55.0; affected 7.54.1; affected 7.54.0; affected 7.53.1; affected 7.53.0; affected 7.52.1; affected 7.52.0; affected 7.51.0; affected 7.50.3; affected 7.50.2; affected 7.50.1; affected 7.50.0; affected 7.49.1; affected 7.49.0; affected 7.48.0; affected 7.47.1; affected 7.47.0; affected 7.46.0; affected 7.45.0; affected 7.44.0; affected 7.43.0; affected 7.42.1; affected 7.42.0; affected 7.41.0; affected 7.40.0; affected 7.39.0; affected 7.38.0; affected 7.37.1; affected 7.37.0; affected 7.36.0; affected 7.35.0; affected 7.34.0; affected 7.33.0; affected 7.32.0; affected 7.31.0; affected 7.30.0; affected 7.29.0; affected 7.28.1; affected 7.28.0; affected 7.27.0; affected 7.26.0; affected 7.25.0; affected 7.24.0; affected 7.23.1; affected 7.23.0; affected 7.22.0; affected 7.21.7; affected 7.21.6; affected 7.21.5; affected 7.21.4; affected 7.21.3; affected 7.21.2; affected 7.21.1; affected 7.21.0; affected 7.20.1; affected 7.20.0; affected 7.19.7; affected 7.19.6; affected 7.19.5; affected 7.19.4; affected 7.19.3; affected 7.19.2; affected 7.19.1; affected 7.19.0; affected 7.18.2; affected 7.18.1; affected 7.18.0; affected 7.17.1; affected 7.17.0; affected 7.16.4; affected 7.16.3; affected 7.16.2; affected 7.16.1; affected 7.16.0; affected 7.15.5; affected 7.15.4; affected 7.15.3; affected 7.15.2; affected 7.15.1; affected 7.15.0; affected 7.14.1 |
CWE
CWE-522
References
- https://curl.se/docs/CVE-2026-6253.json
- https://curl.se/docs/CVE-2026-6253.html
- https://hackerone.com/reports/3669637
ADP enrichment
No English description supplied.
No English description supplied.