CURL-CVE-2026-92387

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Source
https://curl.se/docs/CVE-2026-92387.html
Import Source
https://curl.se/docs/CURL-CVE-2026-92387.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2026-92387
Aliases
  • CVE-2026-92387
Published
2026-10-14T08:00:00Z
Modified
2026-10-14T07:04:26Z
Summary
never-ending loop via server response omission
Details

By permanently omitting the final control-response line, a malicious FTP, IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its configured transfer timeout mechanism, indefinitely blocking all concurrent transfers bound to the same multi-handle.

Database specific 
{
    "CWE":  {
        "desc":  "Loop with Unreachable Exit Condition ('Infinite Loop')",
        "id":  "CWE-835"
    },
    "URL":  "https://curl.se/docs/CVE-2026-92387.json",
    "affects":  "both",
    "issue":  "https://hackerone.com/reports/4022003",
    "last_affected":  "8.22.0",
    "package":  "curl",
    "severity":  "Low",
    "www":  "https://curl.se/docs/CVE-2026-92387.html"
}
Credits
    • Joshua Rogers (Aisle Research) - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
8.10.0
Fixed
8.23.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
a5598b6fcb9ec6b57a7770939a0ffb004456f333
Fixed
753735af87f5c30cb6f60a70342f8bc4bc5fd5db

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
8.21.0
8.22.0
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_21_0
curl-8_22_0
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

Database specific

source 
"https://curl.se/docs/CURL-CVE-2026-92387.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "93901083509750780320854330073705313769",
            "length":  1871
        },
        "id":  "CURL-CVE-2026-92387-9e19c6ef",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/753735af87f5c30cb6f60a70342f8bc4bc5fd5db",
        "target":  {
            "file":  "lib/pingpong.c",
            "function":  "Curl_pp_readresp"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "169611561849356060343441831226630819355",
                "118885270056145985855100001206482147825",
                "176955460389398393301350962022688380839",
                "152937119064837621797053374591284717795",
                "325734690655925500675941255108677679434",
                "255149461833275457707710178384217140142",
                "309957915722649277253297686296249982562",
                "228368724181808616248373136079572392417"
            ],
            "threshold":  0.9
        },
        "id":  "CURL-CVE-2026-92387-d9a0166d",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/753735af87f5c30cb6f60a70342f8bc4bc5fd5db",
        "target":  {
            "file":  "lib/pingpong.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-14T07:04:26Z"