CURL-CVE-2026-107928

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Source
https://curl.se/docs/CVE-2026-107928.html
Import Source
https://curl.se/docs/CURL-CVE-2026-107928.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2026-107928
Aliases
  • CVE-2026-107928
Published
2026-10-14T08:00:00Z
Modified
2026-10-14T07:04:24Z
Summary
info leak uploading over WebSockets with GnuTLS
Details

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutls_record_send() returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked send.

Database specific 
{
    "CWE":  {
        "desc":  "Buffer Over-read",
        "id":  "CWE-126"
    },
    "URL":  "https://curl.se/docs/CVE-2026-107928.json",
    "affects":  "both",
    "issue":  "https://hackerone.com/reports/4099194",
    "last_affected":  "8.22.0",
    "package":  "curl",
    "severity":  "Low",
    "www":  "https://curl.se/docs/CVE-2026-107928.html"
}
Credits
    • Luna with Claude - FINDER
    • Anthropic - FINDER
    • Stefan Eissing - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.86.0
Fixed
8.23.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
664249d095275ec532f55dd1752d80c8c1093a77
Fixed
64fb3e7a7b116f690966054f281624152d4a7651

Affected versions

7.*
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
8.20.0
8.21.0
8.22.0
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
Other
curl-7_86_0
curl-7_87_0
curl-7_88_0
curl-7_88_1
curl-8_0_0
curl-8_0_1
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_1_0
curl-8_1_1
curl-8_1_2
curl-8_20_0
curl-8_21_0
curl-8_22_0
curl-8_2_0
curl-8_2_1
curl-8_3_0
curl-8_4_0
curl-8_5_0
curl-8_6_0
curl-8_7_0
curl-8_7_1
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
rc-8_21_0-1
rc-8_21_0-2
rc-8_21_0-3
rc-8_22_0-1
rc-8_22_0-2
rc-8_22_0-3
rc-8_23_0-1
rc-8_23_0-2
rc-8_23_0-3
tiny-curl-8_4_0

Database specific

source 
"https://curl.se/docs/CURL-CVE-2026-107928.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "17004293909367189618465785831238528729",
            "length":  877
        },
        "id":  "CURL-CVE-2026-107928-29f91023",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/64fb3e7a7b116f690966054f281624152d4a7651",
        "target":  {
            "file":  "lib/vtls/gtls.c",
            "function":  "gtls_send"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "237152868269477282733457753401809078536",
                "310007984379778202135485959311979072715",
                "331851364076556933562923024774740634706",
                "25065144459799342202251174170785250709",
                "159052280036624249758923391343624644361",
                "292029669852123213529518847703179921945"
            ],
            "threshold":  0.9
        },
        "id":  "CURL-CVE-2026-107928-7be05e8d",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/64fb3e7a7b116f690966054f281624152d4a7651",
        "target":  {
            "file":  "lib/vtls/gtls.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-14T07:04:24Z"