CURL-CVE-2026-9079

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Source
https://curl.se/docs/CVE-2026-9079.html
Import Source
https://curl.se/docs/CURL-CVE-2026-9079.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2026-9079
Aliases
  • CVE-2026-9079
Published
2026-06-24T08:00:00Z
Modified
2026-06-24T14:05:45.202035Z
Summary
stale proxy password leak
Details

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

Database specific 
{
    "package": "curl",
    "URL": "https://curl.se/docs/CVE-2026-9079.json",
    "last_affected": "8.20.0",
    "issue": "https://hackerone.com/reports/3750295",
    "affects": "lib",
    "severity": "Medium",
    "www": "https://curl.se/docs/CVE-2026-9079.html",
    "CWE": {
        "desc": "Insufficiently Protected Credentials",
        "id": "CWE-522"
    }
}
References
Credits
    • Guancheng Li - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
8.8.0
Fixed
8.21.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
d5e83eb745762f48d8fafadc5df5dd3ae8d8941e
Fixed
88c7e16cceec816a2df45c899d49b1e85513f193

Affected versions

8.*
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
8.20.0
8.8.0
8.9.0
8.9.1
Other
curl-8_10_0
curl-8_10_1
curl-8_11_0
curl-8_11_1
curl-8_12_0
curl-8_12_1
curl-8_13_0
curl-8_14_0
curl-8_14_1
curl-8_15_0
curl-8_16_0
curl-8_17_0
curl-8_18_0
curl-8_19_0
curl-8_20_0
curl-8_8_0
curl-8_9_0
curl-8_9_1
rc-8_18_0-1
rc-8_18_0-2
rc-8_18_0-3
rc-8_19_0-1
rc-8_19_0-2
rc-8_19_0-3
rc-8_20_0-1
rc-8_20_0-2
rc-8_20_0-3

Database specific

source 
"https://curl.se/docs/CURL-CVE-2026-9079.json"
vanir_signatures_modified 
"2026-06-24T14:05:45Z"
vanir_signatures 
[
    {
        "target": {
            "file": "lib/setopt.c",
            "function": "setopt_cptr_proxy"
        },
        "id": "CURL-CVE-2026-9079-a6e1475f",
        "source": "https://github.com/curl/curl.git/commit/88c7e16cceec816a2df45c899d49b1e85513f193",
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "length": 3298.0,
            "function_hash": "168585028151243835991960072474819965478"
        },
        "signature_version": "v1"
    },
    {
        "target": {
            "file": "lib/setopt.c"
        },
        "id": "CURL-CVE-2026-9079-befc3d48",
        "source": "https://github.com/curl/curl.git/commit/88c7e16cceec816a2df45c899d49b1e85513f193",
        "signature_type": "Line",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "201907121624263517412055040846016692525",
                "130093980200049809120171674846457167074",
                "58013635168143467067474374538820063815",
                "276288106112898693284983216203465450996",
                "43324181074524053230508296889915600609",
                "229180499800345167080719869611143086925",
                "229085348540286290754432530392328657402",
                "174235609601289511659669647822260596764",
                "326018910786740246118855664220576875499",
                "131736690723632290894190285806675464880",
                "329386817036569852960206217203634067544",
                "290360746431318158190314481670118614844",
                "100981296658875490485601069770513651939"
            ]
        },
        "signature_version": "v1"
    }
]