CURL-CVE-2026-92391

See a problem?
Please try reporting it to the source first.
Source
https://curl.se/docs/CVE-2026-92391.html
Import Source
https://curl.se/docs/CURL-CVE-2026-92391.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2026-92391
Aliases
  • CVE-2026-92391
Published
2026-10-14T08:00:00Z
Modified
2026-10-14T19:02:57Z
Summary
curl_mime_free stack overflow by recursion
Details

A deeply nested multipart MIME structure constructed via the public API causes a stack overflow in libcurl during normal cleanup operations. An excessive recursion depth within curl_mime_free leads to unbounded stack frame allocation during structure traversal, ultimately crashing the host process.

Database specific 
{
    "CWE":  {
        "desc":  "Uncontrolled Recursion",
        "id":  "CWE-674"
    },
    "URL":  "https://curl.se/docs/CVE-2026-92391.json",
    "affects":  "lib",
    "issue":  "https://hackerone.com/reports/4024222",
    "last_affected":  "8.22.0",
    "package":  "curl",
    "severity":  "Low",
    "www":  "https://curl.se/docs/CVE-2026-92391.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
7.56.0
Fixed
8.14.3
Introduced
8.15.0
Fixed
8.16.2
Introduced
8.17.0
Fixed
8.20.2
Introduced
8.21.0
Fixed
8.23.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
ce0881edee3c78609eae49665fb70264d8786d29
Fixed
d7546809d5bd548b69ec49fca26565c8f6f0d344

Affected versions

7.*
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
8.20.0
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_56_0
curl-7_56_1
curl-7_57_0
curl-7_58_0
curl-7_59_0
curl-7_60_0
curl-7_61_0
curl-7_61_1
curl-7_62_0
curl-7_63_0
curl-7_64_0
curl-7_64_1
curl-7_65_0
curl-7_65_1
curl-7_65_2
curl-7_65_3
curl-7_66_0
curl-7_67_0
curl-7_68_0
curl-7_69_0
curl-7_69_1
curl-7_70_0
curl-7_71_0
curl-7_71_1
curl-7_72_0
curl-7_73_0
curl-7_74_0
curl-7_75_0
curl-7_76_0
curl-7_76_1
curl-7_77_0
curl-7_78_0
curl-7_79_0
curl-7_79_1
curl-7_80_0
curl-7_81_0
curl-7_82_0
curl-7_83_0
curl-7_83_1
curl-7_84_0
curl-7_85_0
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
tiny-curl-7_72_0
tiny-curl-8_4_0

Database specific

source 
"https://curl.se/docs/CURL-CVE-2026-92391.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "147015790001623118169778988213959787727",
            "length":  246
        },
        "id":  "CURL-CVE-2026-92391-b188b21e",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/d7546809d5bd548b69ec49fca26565c8f6f0d344",
        "target":  {
            "file":  "lib/mime.c",
            "function":  "curl_mime_free"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "57523227017992825538861680299246726151",
                "235298512336075810495430353730587201724",
                "149174428003023240439562035389984792800",
                "194586373621776060322319568173703186896",
                "165023214495903260555809247722491267227",
                "339409239735894207875603648592458215613",
                "298233255040187266306825425890134574642",
                "253562775739621764306820584197574962951",
                "273773810375463775269106130766163028425",
                "283773359174742849680717294069574109968",
                "267021007761417785914595101524884943028",
                "98469154856935114323558128740398398469",
                "338777320260656735131466967687968609223",
                "170843169790853384323054905520127915389",
                "105124177904129793489143417724392077247"
            ],
            "threshold":  0.9
        },
        "id":  "CURL-CVE-2026-92391-f31947a1",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/d7546809d5bd548b69ec49fca26565c8f6f0d344",
        "target":  {
            "file":  "lib/mime.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-14T19:02:57Z"