CURL-CVE-2026-7168

Source
https://curl.se/docs/CVE-2026-7168.html
Import Source
https://curl.se/docs/CURL-CVE-2026-7168.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2026-7168
Aliases
  • CVE-2026-7168
Published
2026-04-29T08:00:00Z
Modified
2026-04-29T08:02:59.242390Z
Summary
cross-proxy Digest auth state leak
Details

Successfully using libcurl to do a transfer over a specific HTTP proxy (proxyA) with Digest authentication and then changing the proxy host to a second one (proxyB) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to proxyB.

Database specific
{
    "last_affected": "8.19.0",
    "package": "curl",
    "URL": "https://curl.se/docs/CVE-2026-7168.json",
    "severity": "Medium",
    "issue": "https://hackerone.com/reports/3697719",
    "www": "https://curl.se/docs/CVE-2026-7168.html",
    "CWE": {
        "desc": "Authentication Bypass by Capture-replay",
        "id": "CWE-294"
    },
    "affects": "lib"
}
References
Credits
    • Muhamad Arga Reksapati - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.12.0
Fixed
8.20.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events

Affected versions

7.*
7.12.0
7.12.1
7.12.2
7.12.3
7.13.0
7.13.1
7.13.2
7.14.0
7.14.1
7.15.0
7.15.1
7.15.2
7.15.3
7.15.4
7.15.5
7.16.0
7.16.1
7.16.2
7.16.3
7.16.4
7.17.0
7.17.1
7.18.0
7.18.1
7.18.2
7.19.0
7.19.1
7.19.2
7.19.3
7.19.4
7.19.5
7.19.6
7.19.7
7.20.0
7.20.1
7.21.0
7.21.1
7.21.2
7.21.3
7.21.4
7.21.5
7.21.6
7.21.7
7.22.0
7.23.0
7.23.1
7.24.0
7.25.0
7.26.0
7.27.0
7.28.0
7.28.1
7.29.0
7.30.0
7.31.0
7.32.0
7.33.0
7.34.0
7.35.0
7.36.0
7.37.0
7.37.1
7.38.0
7.39.0
7.40.0
7.41.0
7.42.0
7.42.1
7.43.0
7.44.0
7.45.0
7.46.0
7.47.0
7.47.1
7.48.0
7.49.0
7.49.1
7.50.0
7.50.1
7.50.2
7.50.3
7.51.0
7.52.0
7.52.1
7.53.0
7.53.1
7.54.0
7.54.1
7.55.0
7.55.1
7.56.0
7.56.1
7.57.0
7.58.0
7.59.0
7.60.0
7.61.0
7.61.1
7.62.0
7.63.0
7.64.0
7.64.1
7.65.0
7.65.1
7.65.2
7.65.3
7.66.0
7.67.0
7.68.0
7.69.0
7.69.1
7.70.0
7.71.0
7.71.1
7.72.0
7.73.0
7.74.0
7.75.0
7.76.0
7.76.1
7.77.0
7.78.0
7.79.0
7.79.1
7.80.0
7.81.0
7.82.0
7.83.0
7.83.1
7.84.0
7.85.0
7.86.0
7.87.0
7.88.0
7.88.1
8.*
8.0.0
8.0.1
8.1.0
8.1.1
8.1.2
8.10.0
8.10.1
8.11.0
8.11.1
8.12.0
8.12.1
8.13.0
8.14.0
8.14.1
8.15.0
8.16.0
8.17.0
8.18.0
8.19.0
8.2.0
8.2.1
8.3.0
8.4.0
8.5.0
8.6.0
8.7.0
8.7.1
8.8.0
8.9.0
8.9.1

Database specific

source
"https://curl.se/docs/CURL-CVE-2026-7168.json"
vanir_signatures
[
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 3175.0,
            "function_hash": "61091634436092434602550532891846171597"
        },
        "source": "https://github.com/curl/curl.git/commit/c1cfdf59acbaf9504c4578d4cf56cdd7c8594507",
        "target": {
            "function": "setopt_cptr_proxy",
            "file": "lib/setopt.c"
        },
        "id": "CURL-CVE-2026-7168-2df49b29"
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "289191531952819915542830893291096787737",
                "59095837547675122187763704309080974731",
                "167006278873572358673810952726165764949",
                "224868766777062336296023368828860473619",
                "333014249335962099969630568066425036457",
                "250872193381835103837860955535302533178",
                "66613185124136658966388644022618296204",
                "16789802708858953211452692390131809950",
                "193982464444589644999129290801954628985",
                "266841901464165558368188423363496994960",
                "335292972306276611749196570122101149273",
                "130847580014203461093210467035637337697"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/curl/curl.git/commit/c1cfdf59acbaf9504c4578d4cf56cdd7c8594507",
        "target": {
            "file": "lib/setopt.c"
        },
        "id": "CURL-CVE-2026-7168-4f9a4c84"
    }
]
vanir_signatures_modified
"2026-04-29T08:02:59Z"